Q: Is 316,640 a Prime Number?
A: No, 316,640 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 316640 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 80 160 1,979 3,958 7,916 9,895 15,832 19,790 31,664 39,580 63,328 79,160 158,320 and 316,640, with no remainder.
Since 316,640 cannot be divided by just 1 and 316,640, it is not a prime number.