Q: Is 21,101,220 a Composite Number?

Why is 21,101,220 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 21,101,220 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 20 21 28 30 35 36 42 45 60 63 70 84 90 105 126 140 180 210 252 315 420 630 1,260 16,747 33,494 50,241 66,988 83,735 100,482 117,229 150,723 167,470 200,964 234,458 251,205 301,446 334,940 351,687 468,916 502,410 586,145 602,892 703,374 753,615 1,004,820 1,055,061 1,172,290 1,406,748 1,507,230 1,758,435 2,110,122 2,344,580 3,014,460 3,516,870 4,220,244 5,275,305 7,033,740 10,550,610 and 21,101,220, with no remainder.

Since 21,101,220 cannot be divided by just 1 and 21,101,220, 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).