Q: Is 428,637 a Prime Number?
A: No, 428,637 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 428637 can be evenly divided by 1 3 11 31 33 93 341 419 1,023 1,257 4,609 12,989 13,827 38,967 142,879 and 428,637, with no remainder.
Since 428,637 cannot be divided by just 1 and 428,637, it is not a prime number.