Q: Is 515,428 a Prime Number?
A: No, 515,428 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 515428 can be evenly divided by 1 2 4 128,857 257,714 and 515,428, with no remainder.
Since 515,428 cannot be divided by just 1 and 515,428, it is not a prime number.