Q: Is 257,430 a Prime Number?
A: No, 257,430 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 257430 can be evenly divided by 1 2 3 5 6 10 15 30 8,581 17,162 25,743 42,905 51,486 85,810 128,715 and 257,430, with no remainder.
Since 257,430 cannot be divided by just 1 and 257,430, it is not a prime number.