Q: Is 21,104,040 a Composite Number?

Why is 21,104,040 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 21,104,040 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 20 24 30 40 60 71 120 142 213 284 355 426 568 710 852 1,065 1,420 1,704 2,130 2,477 2,840 4,260 4,954 7,431 8,520 9,908 12,385 14,862 19,816 24,770 29,724 37,155 49,540 59,448 74,310 99,080 148,620 175,867 297,240 351,734 527,601 703,468 879,335 1,055,202 1,406,936 1,758,670 2,110,404 2,638,005 3,517,340 4,220,808 5,276,010 7,034,680 10,552,020 and 21,104,040, with no remainder.

Since 21,104,040 cannot be divided by just 1 and 21,104,040, 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).