Q: Is 312,508 a Prime Number?
A: No, 312,508 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 312508 can be evenly divided by 1 2 4 7 14 28 11,161 22,322 44,644 78,127 156,254 and 312,508, with no remainder.
Since 312,508 cannot be divided by just 1 and 312,508, it is not a prime number.