Q: Is 631,377 a Prime Number?
A: No, 631,377 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 631377 can be evenly divided by 1 3 9 31 73 93 219 279 657 961 2,263 2,883 6,789 8,649 20,367 70,153 210,459 and 631,377, with no remainder.
Since 631,377 cannot be divided by just 1 and 631,377, it is not a prime number.