Q: Is 811,720 a Composite Number?

Why is 811,720 a composite number?

A composite number is a number that can be divided evenly by more numbers than 1 and itself. It is the opposite of a prime number.

The number 811,720 can be evenly divided by 1 2 4 5 7 8 10 13 14 20 26 28 35 40 52 56 65 70 91 104 130 140 182 223 260 280 364 446 455 520 728 892 910 1,115 1,561 1,784 1,820 2,230 2,899 3,122 3,640 4,460 5,798 6,244 7,805 8,920 11,596 12,488 14,495 15,610 20,293 23,192 28,990 31,220 40,586 57,980 62,440 81,172 101,465 115,960 162,344 202,930 405,860 and 811,720, with no remainder.

Since 811,720 cannot be divided by just 1 and 811,720, it is a composite number.

More Examples

• All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).