Q: Is 721,116 a Prime Number?
A: No, 721,116 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 721116 can be evenly divided by 1 2 3 4 6 9 11 12 18 22 27 33 36 44 54 66 99 108 132 198 297 396 594 607 1,188 1,214 1,821 2,428 3,642 5,463 6,677 7,284 10,926 13,354 16,389 20,031 21,852 26,708 32,778 40,062 60,093 65,556 80,124 120,186 180,279 240,372 360,558 and 721,116, with no remainder.
Since 721,116 cannot be divided by just 1 and 721,116, it is not a prime number.