Q: Is 521,124 a Prime Number?
A: No, 521,124 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 521124 can be evenly divided by 1 2 3 4 6 12 43,427 86,854 130,281 173,708 260,562 and 521,124, with no remainder.
Since 521,124 cannot be divided by just 1 and 521,124, it is not a prime number.