Q: Is 427,521 a Prime Number?
A: No, 427,521 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 427521 can be evenly divided by 1 3 31 93 4,597 13,791 142,507 and 427,521, with no remainder.
Since 427,521 cannot be divided by just 1 and 427,521, it is not a prime number.