Q: Is 671,559 a Prime Number?
A: No, 671,559 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 671559 can be evenly divided by 1 3 7 21 113 283 339 791 849 1,981 2,373 5,943 31,979 95,937 223,853 and 671,559, with no remainder.
Since 671,559 cannot be divided by just 1 and 671,559, it is not a prime number.