Q: Is 161,931 a Prime Number?
A: No, 161,931 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 161931 can be evenly divided by 1 3 7 11 21 33 77 231 701 2,103 4,907 7,711 14,721 23,133 53,977 and 161,931, with no remainder.
Since 161,931 cannot be divided by just 1 and 161,931, it is not a prime number.