Q: Is 666,666 a Composite Number?

Why is 666,666 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 666,666 can be evenly divided by 1 2 3 6 7 9 11 13 14 18 21 22 26 33 37 39 42 63 66 74 77 78 91 99 111 117 126 143 154 182 198 222 231 234 259 273 286 333 407 429 462 481 518 546 666 693 777 814 819 858 962 1,001 1,221 1,287 1,386 1,443 1,554 1,638 2,002 2,331 2,442 2,574 2,849 2,886 3,003 3,367 3,663 4,329 4,662 5,291 5,698 6,006 6,734 7,326 8,547 8,658 9,009 10,101 10,582 15,873 17,094 18,018 20,202 25,641 30,303 31,746 37,037 47,619 51,282 60,606 74,074 95,238 111,111 222,222 333,333 and 666,666, with no remainder.

Since 666,666 cannot be divided by just 1 and 666,666, 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).