Q: Is 18,975,978 a Composite Number?

Why is 18,975,978 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 18,975,978 can be evenly divided by 1 2 3 6 7 9 14 17 18 21 27 34 42 51 54 63 102 119 126 153 189 238 306 357 378 459 714 918 1,071 2,142 2,953 3,213 5,906 6,426 8,859 17,718 20,671 26,577 41,342 50,201 53,154 62,013 79,731 100,402 124,026 150,603 159,462 186,039 301,206 351,407 372,078 451,809 558,117 702,814 903,618 1,054,221 1,116,234 1,355,427 2,108,442 2,710,854 3,162,663 6,325,326 9,487,989 and 18,975,978, with no remainder.

Since 18,975,978 cannot be divided by just 1 and 18,975,978, 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).