Q: Is 503,428 a Prime Number?
A: No, 503,428 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 503428 can be evenly divided by 1 2 4 127 254 508 991 1,982 3,964 125,857 251,714 and 503,428, with no remainder.
Since 503,428 cannot be divided by just 1 and 503,428, it is not a prime number.