Q: Is 208,640 a Prime Number?
A: No, 208,640 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 208640 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 163 256 320 326 640 652 815 1,280 1,304 1,630 2,608 3,260 5,216 6,520 10,432 13,040 20,864 26,080 41,728 52,160 104,320 and 208,640, with no remainder.
Since 208,640 cannot be divided by just 1 and 208,640, it is not a prime number.