Q: Is 628,371 a Prime Number?
A: No, 628,371 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 628371 can be evenly divided by 1 3 9 17 27 37 51 111 153 333 459 629 999 1,369 1,887 4,107 5,661 12,321 16,983 23,273 36,963 69,819 209,457 and 628,371, with no remainder.
Since 628,371 cannot be divided by just 1 and 628,371, it is not a prime number.