Q: Is 7,815,885 a Composite Number?

Why is 7,815,885 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 7,815,885 can be evenly divided by 1 3 5 7 11 15 21 33 35 55 67 77 101 105 165 201 231 303 335 385 469 505 707 737 1,005 1,111 1,155 1,407 1,515 2,121 2,211 2,345 3,333 3,535 3,685 5,159 5,555 6,767 7,035 7,777 10,605 11,055 15,477 16,665 20,301 23,331 25,795 33,835 38,885 47,369 74,437 77,385 101,505 116,655 142,107 223,311 236,845 372,185 521,059 710,535 1,116,555 1,563,177 2,605,295 and 7,815,885, with no remainder.

Since 7,815,885 cannot be divided by just 1 and 7,815,885, 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).