Q: Is 21,560,500 a Composite Number?

Why is 21,560,500 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 21,560,500 can be evenly divided by 1 2 4 5 10 13 20 25 26 31 50 52 62 65 100 107 124 125 130 155 214 250 260 310 325 403 428 500 535 620 650 775 806 1,070 1,300 1,391 1,550 1,612 1,625 2,015 2,140 2,675 2,782 3,100 3,250 3,317 3,875 4,030 5,350 5,564 6,500 6,634 6,955 7,750 8,060 10,075 10,700 13,268 13,375 13,910 15,500 16,585 20,150 26,750 27,820 33,170 34,775 40,300 43,121 50,375 53,500 66,340 69,550 82,925 86,242 100,750 139,100 165,850 172,484 173,875 201,500 215,605 331,700 347,750 414,625 431,210 695,500 829,250 862,420 1,078,025 1,658,500 2,156,050 4,312,100 5,390,125 10,780,250 and 21,560,500, with no remainder.

Since 21,560,500 cannot be divided by just 1 and 21,560,500, 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).