Q: Is 1,555,398 a Composite Number?

Why is 1,555,398 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 1,555,398 can be evenly divided by 1 2 3 6 9 13 17 18 23 26 34 39 46 51 69 78 102 117 138 153 207 221 234 289 299 306 391 414 442 578 598 663 782 867 897 1,173 1,326 1,734 1,794 1,989 2,346 2,601 2,691 3,519 3,757 3,978 5,083 5,202 5,382 6,647 7,038 7,514 10,166 11,271 13,294 15,249 19,941 22,542 30,498 33,813 39,882 45,747 59,823 67,626 86,411 91,494 119,646 172,822 259,233 518,466 777,699 and 1,555,398, with no remainder.

Since 1,555,398 cannot be divided by just 1 and 1,555,398, 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).