Q: Is 400,371 a Prime Number?
A: No, 400,371 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 400371 can be evenly divided by 1 3 317 421 951 1,263 133,457 and 400,371, with no remainder.
Since 400,371 cannot be divided by just 1 and 400,371, it is not a prime number.