Q: Is 21,311,200 a Composite Number?

Why is 21,311,200 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 21,311,200 can be evenly divided by 1 2 4 5 8 10 16 17 20 25 32 34 40 50 68 80 85 100 136 160 170 200 272 340 400 425 544 680 800 850 1,360 1,567 1,700 2,720 3,134 3,400 6,268 6,800 7,835 12,536 13,600 15,670 25,072 26,639 31,340 39,175 50,144 53,278 62,680 78,350 106,556 125,360 133,195 156,700 213,112 250,720 266,390 313,400 426,224 532,780 626,800 665,975 852,448 1,065,560 1,253,600 1,331,950 2,131,120 2,663,900 4,262,240 5,327,800 10,655,600 and 21,311,200, with no remainder.

Since 21,311,200 cannot be divided by just 1 and 21,311,200, 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).