Q: Is 21,506,700 a Composite Number?

Why is 21,506,700 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 21,506,700 can be evenly divided by 1 2 3 4 5 6 10 12 15 17 20 25 30 34 50 51 60 68 75 85 100 102 150 170 204 255 300 340 425 510 850 1,020 1,275 1,700 2,550 4,217 5,100 8,434 12,651 16,868 21,085 25,302 42,170 50,604 63,255 71,689 84,340 105,425 126,510 143,378 210,850 215,067 253,020 286,756 316,275 358,445 421,700 430,134 632,550 716,890 860,268 1,075,335 1,265,100 1,433,780 1,792,225 2,150,670 3,584,450 4,301,340 5,376,675 7,168,900 10,753,350 and 21,506,700, with no remainder.

Since 21,506,700 cannot be divided by just 1 and 21,506,700, 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).