Q: Is 21,302,130 a Composite Number?

Why is 21,302,130 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 21,302,130 can be evenly divided by 1 2 3 5 6 10 15 30 71 73 137 142 146 213 219 274 355 365 411 426 438 685 710 730 822 1,065 1,095 1,370 2,055 2,130 2,190 4,110 5,183 9,727 10,001 10,366 15,549 19,454 20,002 25,915 29,181 30,003 31,098 48,635 50,005 51,830 58,362 60,006 77,745 97,270 100,010 145,905 150,015 155,490 291,810 300,030 710,071 1,420,142 2,130,213 3,550,355 4,260,426 7,100,710 10,651,065 and 21,302,130, with no remainder.

Since 21,302,130 cannot be divided by just 1 and 21,302,130, 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).