Q: Is 671,980 a Prime Number?
A: No, 671,980 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 671980 can be evenly divided by 1 2 4 5 10 20 33,599 67,198 134,396 167,995 335,990 and 671,980, with no remainder.
Since 671,980 cannot be divided by just 1 and 671,980, it is not a prime number.