Q: Is 7,765,605 a Composite Number?

Why is 7,765,605 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 7,765,605 can be evenly divided by 1 3 5 9 15 23 27 41 45 61 69 115 123 135 183 205 207 305 345 369 549 615 621 915 943 1,035 1,107 1,403 1,647 1,845 2,501 2,745 2,829 3,105 4,209 4,715 5,535 7,015 7,503 8,235 8,487 12,505 12,627 14,145 21,045 22,509 25,461 37,515 37,881 42,435 57,523 63,135 67,527 112,545 127,305 172,569 189,405 287,615 337,635 517,707 862,845 1,553,121 2,588,535 and 7,765,605, with no remainder.

Since 7,765,605 cannot be divided by just 1 and 7,765,605, 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).