Q: Is 21,133,308 a Composite Number?

Why is 21,133,308 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 21,133,308 can be evenly divided by 1 2 3 4 6 7 12 14 21 28 42 49 84 98 127 147 196 254 283 294 381 508 566 588 762 849 889 1,132 1,524 1,698 1,778 1,981 2,667 3,396 3,556 3,962 5,334 5,943 6,223 7,924 10,668 11,886 12,446 13,867 18,669 23,772 24,892 27,734 35,941 37,338 41,601 55,468 71,882 74,676 83,202 107,823 143,764 166,404 215,646 251,587 431,292 503,174 754,761 1,006,348 1,509,522 1,761,109 3,019,044 3,522,218 5,283,327 7,044,436 10,566,654 and 21,133,308, with no remainder.

Since 21,133,308 cannot be divided by just 1 and 21,133,308, 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).