Q: Is 217,920 a Prime Number?
A: No, 217,920 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 217920 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 32 40 48 60 64 80 96 120 160 192 227 240 320 454 480 681 908 960 1,135 1,362 1,816 2,270 2,724 3,405 3,632 4,540 5,448 6,810 7,264 9,080 10,896 13,620 14,528 18,160 21,792 27,240 36,320 43,584 54,480 72,640 108,960 and 217,920, with no remainder.
Since 217,920 cannot be divided by just 1 and 217,920, it is not a prime number.