Q: Is 21,540,150 a Composite Number?

Why is 21,540,150 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 21,540,150 can be evenly divided by 1 2 3 5 6 9 10 15 18 25 30 45 50 75 90 150 151 225 302 317 450 453 634 755 906 951 1,359 1,510 1,585 1,902 2,265 2,718 2,853 3,170 3,775 4,530 4,755 5,706 6,795 7,550 7,925 9,510 11,325 13,590 14,265 15,850 22,650 23,775 28,530 33,975 47,550 47,867 67,950 71,325 95,734 142,650 143,601 239,335 287,202 430,803 478,670 718,005 861,606 1,196,675 1,436,010 2,154,015 2,393,350 3,590,025 4,308,030 7,180,050 10,770,075 and 21,540,150, with no remainder.

Since 21,540,150 cannot be divided by just 1 and 21,540,150, 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).