Q: Is 638,129 a Prime Number?
A: No, 638,129 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 638129 can be evenly divided by 1 17 37,537 and 638,129, with no remainder.
Since 638,129 cannot be divided by just 1 and 638,129, it is not a prime number.