Q: Is 721,112 a Prime Number?
A: No, 721,112 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 721112 can be evenly divided by 1 2 4 7 8 14 28 56 79 158 163 316 326 553 632 652 1,106 1,141 1,304 2,212 2,282 4,424 4,564 9,128 12,877 25,754 51,508 90,139 103,016 180,278 360,556 and 721,112, with no remainder.
Since 721,112 cannot be divided by just 1 and 721,112, it is not a prime number.