Q: Is 642,971 a Prime Number?
A: No, 642,971 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 642971 can be evenly divided by 1 7 31 217 2,963 20,741 91,853 and 642,971, with no remainder.
Since 642,971 cannot be divided by just 1 and 642,971, it is not a prime number.