Q: Is 1,215,126 a Composite Number?

Why is 1,215,126 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 1,215,126 can be evenly divided by 1 2 3 6 9 11 17 18 19 22 33 34 38 51 57 66 99 102 114 153 171 187 198 209 306 323 342 361 374 418 561 627 646 722 969 1,083 1,122 1,254 1,683 1,881 1,938 2,166 2,907 3,249 3,366 3,553 3,762 3,971 5,814 6,137 6,498 7,106 7,942 10,659 11,913 12,274 18,411 21,318 23,826 31,977 35,739 36,822 55,233 63,954 67,507 71,478 110,466 135,014 202,521 405,042 607,563 and 1,215,126, with no remainder.

Since 1,215,126 cannot be divided by just 1 and 1,215,126, 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).