{
 "facts": [
  {
   "id": 1,
   "number": 0,
   "text": "0 is the additive identity: adding it to any number leaves that number unchanged, and it is the only real number that is neither positive nor negative.",
   "type": "math"
  },
  {
   "id": 2,
   "number": 1,
   "text": "1 is the multiplicative identity, and by definition it is not a prime number.",
   "type": "math"
  },
  {
   "id": 3,
   "number": 2,
   "text": "2 is the only even prime number.",
   "type": "math"
  },
  {
   "id": 4,
   "number": 3,
   "text": "3 is the smallest odd prime number.",
   "type": "math"
  },
  {
   "id": 5,
   "number": 4,
   "text": "4 is the smallest composite number.",
   "type": "math"
  },
  {
   "id": 6,
   "number": 5,
   "text": "5 is the number of Platonic solids: tetrahedron, cube, octahedron, dodecahedron, and icosahedron.",
   "type": "math"
  },
  {
   "id": 7,
   "number": 6,
   "text": "6 is the smallest perfect number: it equals the sum of its proper divisors, 1 + 2 + 3.",
   "type": "math"
  },
  {
   "id": 8,
   "number": 7,
   "text": "7 is a Mersenne prime: 2³ − 1.",
   "type": "math"
  },
  {
   "id": 9,
   "number": 9,
   "text": "9 is the smallest odd composite number, and the square of 3.",
   "type": "math"
  },
  {
   "id": 10,
   "number": 12,
   "text": "12 is the smallest abundant number: its proper divisors 1, 2, 3, 4, and 6 sum to 16.",
   "type": "math"
  },
  {
   "id": 11,
   "number": 13,
   "text": "13 is the number of Archimedean solids.",
   "type": "math"
  },
  {
   "id": 12,
   "number": 16,
   "text": "16 is the only integer that can be written as x^y = y^x with x and y distinct: 2⁴ = 4² = 16.",
   "type": "math"
  },
  {
   "id": 13,
   "number": 17,
   "text": "17 is the number of wallpaper groups — the distinct plane symmetry patterns possible in two dimensions.",
   "type": "math"
  },
  {
   "id": 14,
   "number": 23,
   "text": "23 is the birthday-paradox number: in a room of just 23 people, the odds that two share a birthday pass 50%.",
   "type": "math"
  },
  {
   "id": 15,
   "number": 28,
   "text": "28 is the second perfect number: 1 + 2 + 4 + 7 + 14 = 28.",
   "type": "math"
  },
  {
   "id": 16,
   "number": 60,
   "text": "60 is the smallest number divisible by every integer from 1 to 6, and the base of the Babylonian number system — which is why minutes and seconds come in sixties.",
   "type": "math"
  },
  {
   "id": 17,
   "number": 64,
   "text": "64 is the smallest number greater than 1 that is both a perfect square (8²) and a perfect cube (4³).",
   "type": "math"
  },
  {
   "id": 18,
   "number": 89,
   "text": "89 is a Fibonacci prime, and the decimal expansion of 1/89 begins by spelling out the Fibonacci sequence: 0.01123595…",
   "type": "math"
  },
  {
   "id": 19,
   "number": 90,
   "text": "90 is the number of degrees in a right angle.",
   "type": "math"
  },
  {
   "id": 20,
   "number": 100,
   "text": "100 is 10², and the sum of the first ten odd numbers.",
   "type": "math"
  },
  {
   "id": 21,
   "number": 120,
   "text": "120 is 5 factorial: 1 × 2 × 3 × 4 × 5.",
   "type": "math"
  },
  {
   "id": 22,
   "number": 144,
   "text": "144 is the only Fibonacci number greater than 1 that is a perfect square: 12².",
   "type": "math"
  },
  {
   "id": 23,
   "number": 153,
   "text": "153 is a narcissistic number: 1³ + 5³ + 3³ = 153.",
   "type": "math"
  },
  {
   "id": 24,
   "number": 220,
   "text": "220 forms the smallest amicable pair with 284: the proper divisors of each sum to the other.",
   "type": "math"
  },
  {
   "id": 25,
   "number": 341,
   "text": "341 is the smallest pseudoprime to base 2: it passes Fermat's primality test for 2 despite being 11 × 31.",
   "type": "math"
  },
  {
   "id": 26,
   "number": 496,
   "text": "496 is the third perfect number.",
   "type": "math"
  },
  {
   "id": 27,
   "number": 561,
   "text": "561 is the smallest Carmichael number: a composite that fools Fermat's primality test for every base coprime to it.",
   "type": "math"
  },
  {
   "id": 28,
   "number": 1729,
   "text": "1729 is the Hardy–Ramanujan taxicab number: the smallest number expressible as a sum of two positive cubes in two different ways, 1³ + 12³ = 9³ + 10³.",
   "type": "math"
  },
  {
   "id": 29,
   "number": 2520,
   "text": "2520 is the smallest number divisible by every integer from 1 to 10.",
   "type": "math"
  },
  {
   "id": 30,
   "number": 6174,
   "text": "6174 is Kaprekar's constant: sort any four-digit number's digits descending, subtract them sorted ascending, repeat — you always reach 6174.",
   "type": "math"
  },
  {
   "id": 31,
   "number": 8128,
   "text": "8128 is the fourth perfect number, known since antiquity.",
   "type": "math"
  },
  {
   "id": 32,
   "number": 65537,
   "text": "65537 is the largest known Fermat prime: 2¹⁶ + 1.",
   "type": "math"
  },
  {
   "id": 33,
   "number": 142857,
   "text": "142857 is a cyclic number: multiplying it by 1 through 6 rotates its digits, and it is the repeating block of 1/7.",
   "type": "math"
  },
  {
   "id": 34,
   "number": 7,
   "text": "7 is the most likely total when rolling two six-sided dice.",
   "type": "trivia"
  },
  {
   "id": 35,
   "number": 8,
   "text": "8 is the number of legs on a spider and the number of sides on a stop sign.",
   "type": "trivia"
  },
  {
   "id": 36,
   "number": 9,
   "text": "9 is the number of innings in a regulation baseball game, and the number of lives a cat proverbially has.",
   "type": "trivia"
  },
  {
   "id": 37,
   "number": 10,
   "text": "10 is the number of pins in ten-pin bowling.",
   "type": "trivia"
  },
  {
   "id": 38,
   "number": 11,
   "text": "11 is the number of players per side in association football, cricket, and field hockey.",
   "type": "trivia"
  },
  {
   "id": 39,
   "number": 13,
   "text": "13 is the object of triskaidekaphobia; many hotels and office buildings skip a thirteenth floor because of it.",
   "type": "trivia"
  },
  {
   "id": 40,
   "number": 15,
   "text": "15 is the number of players on a rugby union side.",
   "type": "trivia"
  },
  {
   "id": 41,
   "number": 18,
   "text": "18 is the number of holes on a standard golf course.",
   "type": "trivia"
  },
  {
   "id": 42,
   "number": 21,
   "text": "21 is the total number of spots on a standard six-sided die, and the winning target in blackjack.",
   "type": "trivia"
  },
  {
   "id": 43,
   "number": 24,
   "text": "24 is the number of carats in pure gold, and the number of hours in a day.",
   "type": "trivia"
  },
  {
   "id": 44,
   "number": 26,
   "text": "26 is the number of letters in the English alphabet.",
   "type": "trivia"
  },
  {
   "id": 45,
   "number": 27,
   "text": "27 is the number of bones in a human hand.",
   "type": "trivia"
  },
  {
   "id": 46,
   "number": 32,
   "text": "32 is the temperature in degrees Fahrenheit at which water freezes, and the number of teeth in a full adult set.",
   "type": "trivia"
  },
  {
   "id": 47,
   "number": 40,
   "text": "−40 is where the Fahrenheit and Celsius scales meet: −40°F equals −40°C.",
   "type": "trivia"
  },
  {
   "id": 48,
   "number": 42,
   "text": "42 is the Answer to the Ultimate Question of Life, the Universe, and Everything in Douglas Adams' The Hitchhiker's Guide to the Galaxy.",
   "type": "trivia"
  },
  {
   "id": 49,
   "number": 52,
   "text": "52 is the number of cards in a standard deck (jokers excluded), and the number of full weeks in a year.",
   "type": "trivia"
  },
  {
   "id": 50,
   "number": 64,
   "text": "64 is the number of squares on a chessboard.",
   "type": "trivia"
  },
  {
   "id": 51,
   "number": 66,
   "text": "66 is the number of the historic U.S. Route from Chicago to Santa Monica.",
   "type": "trivia"
  },
  {
   "id": 52,
   "number": 88,
   "text": "88 is the number of keys on a modern piano, and the speed in miles per hour the DeLorean must reach to travel through time in Back to the Future.",
   "type": "trivia"
  },
  {
   "id": 53,
   "number": 101,
   "text": "101 is the number of Dalmatians in the title of the Disney classic.",
   "type": "trivia"
  },
  {
   "id": 54,
   "number": 118,
   "text": "118 is the number of chemical elements currently on the periodic table, ending with oganesson.",
   "type": "trivia"
  },
  {
   "id": 55,
   "number": 180,
   "text": "180 is the maximum score with three darts: three treble-20s.",
   "type": "trivia"
  },
  {
   "id": 56,
   "number": 206,
   "text": "206 is the number of bones in a typical adult human skeleton.",
   "type": "trivia"
  },
  {
   "id": 57,
   "number": 221,
   "text": "221 is the street number of Sherlock Holmes' fictional address, 221B Baker Street.",
   "type": "trivia"
  },
  {
   "id": 58,
   "number": 300,
   "text": "300 is a perfect game in ten-pin bowling: twelve strikes in a row.",
   "type": "trivia"
  },
  {
   "id": 59,
   "number": 451,
   "text": "451 is the title temperature of Ray Bradbury's Fahrenheit 451 — the point at which book paper supposedly catches fire.",
   "type": "trivia"
  },
  {
   "id": 60,
   "number": 500,
   "text": "500 is the number of miles in the Indianapolis 500.",
   "type": "trivia"
  },
  {
   "id": 61,
   "number": 747,
   "text": "747 is the Boeing airliner nicknamed the “jumbo jet,” the original twin-aisle wide-body.",
   "type": "trivia"
  },
  {
   "id": 62,
   "number": 1000,
   "text": "1000 is how many words a picture is proverbially worth.",
   "type": "trivia"
  },
  {
   "id": 63,
   "number": 20000,
   "text": "20000 is the number of leagues in the title of Jules Verne's Twenty Thousand Leagues Under the Seas.",
   "type": "trivia"
  },
  {
   "id": 64,
   "number": 86400,
   "text": "86400 is the number of seconds in a day.",
   "type": "trivia"
  },
  {
   "id": 65,
   "number": 1066,
   "text": "1066 is the year the Battle of Hastings began the Norman conquest of England.",
   "type": "year"
  },
  {
   "id": 66,
   "number": 1215,
   "text": "1215 is the year Magna Carta was sealed at Runnymede.",
   "type": "year"
  },
  {
   "id": 67,
   "number": 1492,
   "text": "1492 is the year Christopher Columbus' first voyage reached the Americas.",
   "type": "year"
  },
  {
   "id": 68,
   "number": 1543,
   "text": "1543 is the year Copernicus published De revolutionibus, putting the Sun at the center of the cosmos.",
   "type": "year"
  },
  {
   "id": 69,
   "number": 1609,
   "text": "1609 is the year Galileo first turned a telescope to the night sky.",
   "type": "year"
  },
  {
   "id": 70,
   "number": 1687,
   "text": "1687 is the year Isaac Newton published the Principia.",
   "type": "year"
  },
  {
   "id": 71,
   "number": 1776,
   "text": "1776 is the year the United States Declaration of Independence was adopted.",
   "type": "year"
  },
  {
   "id": 72,
   "number": 1789,
   "text": "1789 is the year the French Revolution began with the storming of the Bastille.",
   "type": "year"
  },
  {
   "id": 73,
   "number": 1859,
   "text": "1859 is the year Charles Darwin published On the Origin of Species.",
   "type": "year"
  },
  {
   "id": 74,
   "number": 1869,
   "text": "1869 is the year Dmitri Mendeleev published his periodic table of the elements.",
   "type": "year"
  },
  {
   "id": 75,
   "number": 1876,
   "text": "1876 is the year Alexander Graham Bell was granted his patent for the telephone.",
   "type": "year"
  },
  {
   "id": 76,
   "number": 1903,
   "text": "1903 is the year the Wright brothers made the first powered airplane flights at Kitty Hawk.",
   "type": "year"
  },
  {
   "id": 77,
   "number": 1912,
   "text": "1912 is the year the Titanic sank on its maiden voyage.",
   "type": "year"
  },
  {
   "id": 78,
   "number": 1928,
   "text": "1928 is the year Alexander Fleming discovered penicillin.",
   "type": "year"
  },
  {
   "id": 79,
   "number": 1945,
   "text": "1945 is the year the Second World War ended and the United Nations was founded.",
   "type": "year"
  },
  {
   "id": 80,
   "number": 1953,
   "text": "1953 is the year Watson and Crick published the double-helix structure of DNA, and the year Everest was first summited by Hillary and Norgay.",
   "type": "year"
  },
  {
   "id": 81,
   "number": 1961,
   "text": "1961 is the year Yuri Gagarin became the first human in space.",
   "type": "year"
  },
  {
   "id": 82,
   "number": 1969,
   "text": "1969 is the year Apollo 11 landed the first humans on the Moon — and the year the first ARPANET message was sent.",
   "type": "year"
  },
  {
   "id": 83,
   "number": 1989,
   "text": "1989 is the year the Berlin Wall fell and Tim Berners-Lee proposed the World Wide Web.",
   "type": "year"
  },
  {
   "id": 84,
   "number": 1991,
   "text": "1991 is the year the World Wide Web opened to the public and Linus Torvalds announced Linux.",
   "type": "year"
  },
  {
   "id": 85,
   "number": 1997,
   "text": "1997 is the year IBM's Deep Blue defeated world chess champion Garry Kasparov.",
   "type": "year"
  },
  {
   "id": 86,
   "number": 2008,
   "text": "2008 is the year the Bitcoin whitepaper was published.",
   "type": "year"
  }
 ],
 "dates": [
  {
   "id": 1,
   "month": 1,
   "day": 1,
   "text": "January 1st is New Year's Day in the Gregorian calendar."
  },
  {
   "id": 2,
   "month": 2,
   "day": 14,
   "text": "February 14th is Valentine's Day."
  },
  {
   "id": 3,
   "month": 3,
   "day": 14,
   "text": "March 14th is Pi Day (3/14), and Albert Einstein's birthday."
  },
  {
   "id": 4,
   "month": 4,
   "day": 12,
   "text": "April 12th is the day in 1961 that Yuri Gagarin orbited the Earth, the first human in space."
  },
  {
   "id": 5,
   "month": 5,
   "day": 4,
   "text": "May 4th is Star Wars Day: “May the fourth be with you.”"
  },
  {
   "id": 6,
   "month": 6,
   "day": 16,
   "text": "June 16th is Bloomsday — the single 1904 day on which James Joyce's Ulysses is set."
  },
  {
   "id": 7,
   "month": 7,
   "day": 14,
   "text": "July 14th is Bastille Day, marking the storming of the Bastille in 1789."
  },
  {
   "id": 8,
   "month": 7,
   "day": 20,
   "text": "July 20th is the day in 1969 that Apollo 11 landed the first humans on the Moon."
  },
  {
   "id": 9,
   "month": 9,
   "day": 13,
   "text": "September 13th is the Day of the Programmer in non-leap years — the 256th day of the year."
  },
  {
   "id": 10,
   "month": 10,
   "day": 31,
   "text": "October 31st is Halloween."
  },
  {
   "id": 11,
   "month": 11,
   "day": 11,
   "text": "November 11th is the day in 1918 that the First World War armistice took effect, at the eleventh hour of the eleventh day of the eleventh month."
  },
  {
   "id": 12,
   "month": 12,
   "day": 25,
   "text": "December 25th is Christmas Day."
  }
 ]
}