Description

You never know when you need to check if anumber is a prime number or not!

This handy app can tell you if any number is prime.
It can calculate the primality of a number as big as you want, thelimit is the sky!

Try it, here is a list of the 100 first prime numbers:
2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, 37, 41, 43, 47, 53, 59, 61,67, 71,
73, 79, 83, 89, 97, 101, 103, 107, 109, 113, 127, 131, 137, 139,149, 151, 157, 163, 167, 173
179, 181, 191, 193, 197, 199, 211, 223, 227, 229, 233, 239, 241,251, 257, 263, 269, 271, 277, 281
283, 293, 307, 311, 313, 317, 331, 337, 347, 349, 353, 359, 367,373, 379, 383, 389, 397, 401, 409
419, 421, 431, 433, 439, 443, 449, 457, 461, 463, 467, 479, 487,491, 499, 503, 509, 521, 523, 541

You can also try bigger numbers. However for very big numbers,it may take time to calculate their primality!