10 Math Facts You Did Not Know
1. Prime numbers can be triangular: 5 is the 3rd triangular number, and 17 is the 7th.
2. Zero is the only number that cannot be represented in Roman numerals.
3. The sum of the first 144 decimal places of pi is 666.
4. The word "hundred" comes from "hundredth," which means 120, not 100.
5. The smallest perfect number is 6, and the sum of its divisors (excluding itself) is 6.
6. "Four" is the only number in the English language with the same number of letters as its value.
7. There are 206! (factorial) ways to shuffle a deck of cards, more than atoms on Earth.
8. A "googol" is 10 to the power of 100, and a "googolplex" is 10 to the power of a googol.
9. The number 111,111,111 x 111,111,111 equals 12,345,678,987,654,321.
10. The sum of the first hundred-odd numbers is 10,000.
Read more stories here ↓
More Stories