Q: Is 21,720,050 a Composite Number?

Why is 21,720,050 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 21,720,050 can be evenly divided by 1 2 5 10 11 17 22 23 25 34 46 50 55 85 101 110 115 170 187 202 230 253 275 374 391 425 505 506 550 575 782 850 935 1,010 1,111 1,150 1,265 1,717 1,870 1,955 2,222 2,323 2,525 2,530 3,434 3,910 4,301 4,646 4,675 5,050 5,555 6,325 8,585 8,602 9,350 9,775 11,110 11,615 12,650 17,170 18,887 19,550 21,505 23,230 25,553 27,775 37,774 39,491 42,925 43,010 51,106 55,550 58,075 78,982 85,850 94,435 107,525 116,150 127,765 188,870 197,455 215,050 255,530 394,910 434,401 472,175 638,825 868,802 944,350 987,275 1,277,650 1,974,550 2,172,005 4,344,010 10,860,025 and 21,720,050, with no remainder.

Since 21,720,050 cannot be divided by just 1 and 21,720,050, 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).