Q: Is 1,551,879 a Composite Number?

Why is 1,551,879 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 1,551,879 can be evenly divided by 1 3 7 9 17 21 23 27 49 51 63 69 81 119 147 153 161 189 207 357 391 441 459 483 567 621 833 1,071 1,127 1,173 1,323 1,377 1,449 1,863 2,499 2,737 3,213 3,381 3,519 3,969 4,347 7,497 8,211 9,639 10,143 10,557 13,041 19,159 22,491 24,633 30,429 31,671 57,477 67,473 73,899 91,287 172,431 221,697 517,293 and 1,551,879, with no remainder.

Since 1,551,879 cannot be divided by just 1 and 1,551,879, 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).