Q: Is 315,491 a Prime Number?
A: No, 315,491 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 315491 can be evenly divided by 1 11 23 29 43 253 319 473 667 989 1,247 7,337 10,879 13,717 28,681 and 315,491, with no remainder.
Since 315,491 cannot be divided by just 1 and 315,491, it is not a prime number.