29/06/2025
1. Zero is the only number that can't be represented by Roman numerals.
2. A circle has 360 degrees because ancient Babylonians based their number system on 60.
3. The word "hundred" comes from the Old Norse word "hundrath," which actually means 120, not 100.
4. Pi (π) has been calculated to over 31 trillion digits, but only 39 decimal places are necessary to calculate the circumference of the observable universe!
5. The Fibonacci sequence appears in nature, such as in the arrangement of leaves, fruits, and flowers.
6. Multiplying 111,111,111 by 111,111,111 gives you a palindromic number: 12,345,678,987,654,321.
7. "Googol" is the number 1 followed by 100 zeros. Google’s name was inspired by this number.
8. A "perfect number" is one where all its divisors (excluding the number itself) add up to the 9. number. The first perfect number is 6 (1+2+3=6).
10. The number 2 is the only even prime number.
11. "Kaprekar's constant" is 6174. If you take any four-digit number, rearrange its digits to form the 12. largest and smallest numbers possible, subtract them, and repeat, you’ll always reach 6174.
13. There are infinitely many primes, but they get rarer the larger the numbers get.
14. A "parabola" is the curve formed by projectile motion, such as a ball being thrown.
15. "Euler's number" (e) is one of the most important numbers in mathematics, approximately equal to 2.71828. It’s used in calculating compound interest and exponential growth.
16. A "magic square" is a grid where the numbers in each row, column, and diagonal all add up to the same number.
18. A mobius strip is a surface with only one side and one boundary. You can make one by twisting a strip of paper and taping the ends together.
19m If you shuffle a deck of cards, there is a very high chance that the specific order of the cards has never existed before.
20. There are more possible iterations of a game of chess than there are atoms in the known universe.
21. "Sophie Germain primes" are primes of the form 2p + 1, where p is also a prime.
22. A "googolplex" is a 1 followed by a googol of zeros, which is too large to be written down physically.
23. The sum of all the numbers on a roulette wheel is 666, often called "the number of the beast."
24. In a group of 23 people, there’s a 50% chance that two of them share the same birthday. This is called the "birthday paradox."
25. The number 9 has a magical property: If you multiply any number by 9 and add the digits of the result, it will always sum to 9.
26. There are 13 Archimedean solids, which are polyhedra with regular polygon faces and identical vertices.
27. Every odd number that is greater than 1 is the sum of two prime numbers (according to 28. Goldbach’s conjecture, yet to be proven).
29. The golden ratio (phi) is approximately 1.618 and often appears in art, architecture, and nature for its aesthetically pleasing properties.
