Q: Is 721,160 a Prime Number?
A: No, 721,160 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 721160 can be evenly divided by 1 2 4 5 8 10 11 20 22 40 44 55 88 110 121 149 220 242 298 440 484 596 605 745 968 1,192 1,210 1,490 1,639 2,420 2,980 3,278 4,840 5,960 6,556 8,195 13,112 16,390 18,029 32,780 36,058 65,560 72,116 90,145 144,232 180,290 360,580 and 721,160, with no remainder.
Since 721,160 cannot be divided by just 1 and 721,160, it is not a prime number.