Q: Is 42,857 a Prime Number?
A: No, 42,857 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 42857 can be evenly divided by 1 17 2,521 and 42,857, with no remainder.
Since 42,857 cannot be divided by just 1 and 42,857, it is not a prime number.