Q: Is 311,920 a Prime Number?
A: No, 311,920 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 311920 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 35 40 56 70 80 112 140 280 557 560 1,114 2,228 2,785 3,899 4,456 5,570 7,798 8,912 11,140 15,596 19,495 22,280 31,192 38,990 44,560 62,384 77,980 155,960 and 311,920, with no remainder.
Since 311,920 cannot be divided by just 1 and 311,920, it is not a prime number.