Q: Is 1,888,887 a Composite Number?

Why is 1,888,887 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 1,888,887 can be evenly divided by 1 3 7 11 13 17 21 33 37 39 51 77 91 111 119 143 187 221 231 259 273 357 407 429 481 561 629 663 777 1,001 1,221 1,309 1,443 1,547 1,887 2,431 2,849 3,003 3,367 3,927 4,403 4,641 5,291 6,919 7,293 8,177 8,547 10,101 13,209 15,873 17,017 20,757 24,531 37,037 48,433 51,051 57,239 89,947 111,111 145,299 171,717 269,841 629,629 and 1,888,887, with no remainder.

Since 1,888,887 cannot be divided by just 1 and 1,888,887, 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).