Is it a prime number?
A prime number can only be divided evenly by 1 and itself.
π Learn tricks for spotting primesCool Number Facts
π Fibonacci Numbers
1, 1, 2, 3, 5, 8, 13, 21, 34... Each number is the sum of the two before it! You can find this pattern in flowers, pinecones, and seashells.
π Palindrome Numbers
A palindrome number reads the same backwards, like 121 or 3773. Can you find one of your own?
π― Googol
A googol is the digit 1 followed by 100 zeros. There aren't even a googol grains of sand on Earth!
π See million, billion, trillion... all the way to googolplexβΎοΈ Infinite Primes
No matter how far you count, you'll always find new prime numbers. There are infinitely many of them!
π₯§ Pi (Ο)
Pi is the number you get from a circle's distance around divided by the distance across. It never ends or repeats!
π₯§ See the first 200 digits, the circle formulas, and try the quiz