Q: Is 643,079 a Prime Number?
A: No, 643,079 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 643079 can be evenly divided by 1 131 4,909 and 643,079, with no remainder.
Since 643,079 cannot be divided by just 1 and 643,079, it is not a prime number.