Q: Is 423,637 a Prime Number?
A: No, 423,637 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 423637 can be evenly divided by 1 23 113 163 2,599 3,749 18,419 and 423,637, with no remainder.
Since 423,637 cannot be divided by just 1 and 423,637, it is not a prime number.