Q: Is 420,143 a Prime Number?
A: No, 420,143 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 420143 can be evenly divided by 1 31 13,553 and 420,143, with no remainder.
Since 420,143 cannot be divided by just 1 and 420,143, it is not a prime number.