Q: Is 21,110,208 a Composite Number?

Why is 21,110,208 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 21,110,208 can be evenly divided by 1 2 3 4 6 7 8 12 14 16 21 24 28 32 42 48 56 64 84 96 112 113 139 168 192 224 226 278 336 339 417 448 452 556 672 678 791 834 904 973 1,112 1,344 1,356 1,582 1,668 1,808 1,946 2,224 2,373 2,712 2,919 3,164 3,336 3,616 3,892 4,448 4,746 5,424 5,838 6,328 6,672 7,232 7,784 8,896 9,492 10,848 11,676 12,656 13,344 15,568 15,707 18,984 21,696 23,352 25,312 26,688 31,136 31,414 37,968 46,704 47,121 50,624 62,272 62,828 75,936 93,408 94,242 109,949 125,656 151,872 186,816 188,484 219,898 251,312 329,847 376,968 439,796 502,624 659,694 753,936 879,592 1,005,248 1,319,388 1,507,872 1,759,184 2,638,776 3,015,744 3,518,368 5,277,552 7,036,736 10,555,104 and 21,110,208, with no remainder.

Since 21,110,208 cannot be divided by just 1 and 21,110,208, 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).