Q: Is 17,920 a Prime Number?
A: No, 17,920 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 17920 can be evenly divided by 1 2 4 5 7 8 10 14 16 20 28 32 35 40 56 64 70 80 112 128 140 160 224 256 280 320 448 512 560 640 896 1,120 1,280 1,792 2,240 2,560 3,584 4,480 8,960 and 17,920, with no remainder.
Since 17,920 cannot be divided by just 1 and 17,920, it is not a prime number.