Q: Is 21,512,208 a Composite Number?

Why is 21,512,208 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 21,512,208 can be evenly divided by 1 2 3 4 6 8 12 16 17 24 34 41 48 51 68 82 102 123 136 164 204 246 272 328 408 492 643 656 697 816 984 1,286 1,394 1,929 1,968 2,091 2,572 2,788 3,858 4,182 5,144 5,576 7,716 8,364 10,288 10,931 11,152 15,432 16,728 21,862 26,363 30,864 32,793 33,456 43,724 52,726 65,586 79,089 87,448 105,452 131,172 158,178 174,896 210,904 262,344 316,356 421,808 448,171 524,688 632,712 896,342 1,265,424 1,344,513 1,792,684 2,689,026 3,585,368 5,378,052 7,170,736 10,756,104 and 21,512,208, with no remainder.

Since 21,512,208 cannot be divided by just 1 and 21,512,208, 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).