Q: Is 257,508 a Prime Number?
A: No, 257,508 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 257508 can be evenly divided by 1 2 3 4 6 9 12 18 23 36 46 69 92 138 207 276 311 414 622 828 933 1,244 1,866 2,799 3,732 5,598 7,153 11,196 14,306 21,459 28,612 42,918 64,377 85,836 128,754 and 257,508, with no remainder.
Since 257,508 cannot be divided by just 1 and 257,508, it is not a prime number.