Q: Is 2,509,221 a Prime Number?
A: No, 2,509,221 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 2509221 can be evenly divided by 1 3 11 13 33 39 143 429 5,849 17,547 64,339 76,037 193,017 228,111 836,407 and 2,509,221, with no remainder.
Since 2,509,221 cannot be divided by just 1 and 2,509,221, it is not a prime number.