Q: Is 818,560 a Prime Number?
A: No, 818,560 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 818560 can be evenly divided by 1 2 4 5 8 10 16 20 32 40 64 80 128 160 320 640 1,279 2,558 5,116 6,395 10,232 12,790 20,464 25,580 40,928 51,160 81,856 102,320 163,712 204,640 409,280 and 818,560, with no remainder.
Since 818,560 cannot be divided by just 1 and 818,560, it is not a prime number.