Q: Is 1,990,989 a Composite Number?

Why is 1,990,989 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 1,990,989 can be evenly divided by 1 3 7 9 11 13 17 21 33 39 51 63 77 91 99 117 119 143 153 169 187 221 231 273 357 429 507 561 663 693 819 1,001 1,071 1,183 1,287 1,309 1,521 1,547 1,683 1,859 1,989 2,431 2,873 3,003 3,549 3,927 4,641 5,577 7,293 8,619 9,009 10,647 11,781 13,013 13,923 16,731 17,017 20,111 21,879 25,857 31,603 39,039 51,051 60,333 94,809 117,117 153,153 180,999 221,221 284,427 663,663 and 1,990,989, with no remainder.

Since 1,990,989 cannot be divided by just 1 and 1,990,989, 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).