Q: Is 1,418,445 a Composite Number?

Why is 1,418,445 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 1,418,445 can be evenly divided by 1 3 5 7 9 15 19 21 27 35 45 57 63 79 95 105 133 135 171 189 237 285 315 395 399 513 553 665 711 855 945 1,185 1,197 1,501 1,659 1,995 2,133 2,565 2,765 3,555 3,591 4,503 4,977 5,985 7,505 8,295 10,507 10,665 13,509 14,931 17,955 22,515 24,885 31,521 40,527 52,535 67,545 74,655 94,563 157,605 202,635 283,689 472,815 and 1,418,445, with no remainder.

Since 1,418,445 cannot be divided by just 1 and 1,418,445, 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).