Q: Is 21,021,126 a Composite Number?

Why is 21,021,126 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 21,021,126 can be evenly divided by 1 2 3 6 7 14 21 23 42 46 47 69 94 138 141 161 282 322 329 463 483 658 926 966 987 1,081 1,389 1,974 2,162 2,778 3,241 3,243 6,482 6,486 7,567 9,723 10,649 15,134 19,446 21,298 21,761 22,701 31,947 43,522 45,402 63,894 65,283 74,543 130,566 149,086 152,327 223,629 304,654 447,258 456,981 500,503 913,962 1,001,006 1,501,509 3,003,018 3,503,521 7,007,042 10,510,563 and 21,021,126, with no remainder.

Since 21,021,126 cannot be divided by just 1 and 21,021,126, 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).