Q: Is 671,958 a Prime Number?
A: No, 671,958 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 671958 can be evenly divided by 1 2 3 6 7 9 14 18 21 42 63 126 5,333 10,666 15,999 31,998 37,331 47,997 74,662 95,994 111,993 223,986 335,979 and 671,958, with no remainder.
Since 671,958 cannot be divided by just 1 and 671,958, it is not a prime number.