Q: Is 21,134,124 a Composite Number?

Why is 21,134,124 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 21,134,124 can be evenly divided by 1 2 3 4 6 9 11 12 18 22 33 36 44 66 83 99 132 166 198 249 332 396 498 643 747 913 996 1,286 1,494 1,826 1,929 2,572 2,739 2,988 3,652 3,858 5,478 5,787 7,073 7,716 8,217 10,956 11,574 14,146 16,434 21,219 23,148 28,292 32,868 42,438 53,369 63,657 84,876 106,738 127,314 160,107 213,476 254,628 320,214 480,321 587,059 640,428 960,642 1,174,118 1,761,177 1,921,284 2,348,236 3,522,354 5,283,531 7,044,708 10,567,062 and 21,134,124, with no remainder.

Since 21,134,124 cannot be divided by just 1 and 21,134,124, 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).