Q: Is 423,857 a Prime Number?
A: No, 423,857 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 423857 can be evenly divided by 1 7 151 401 1,057 2,807 60,551 and 423,857, with no remainder.
Since 423,857 cannot be divided by just 1 and 423,857, it is not a prime number.