Q: Is 21,212,600 a Composite Number?

Why is 21,212,600 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 21,212,600 can be evenly divided by 1 2 4 5 8 10 17 20 25 34 40 50 68 85 100 136 170 200 289 340 367 425 578 680 734 850 1,156 1,445 1,468 1,700 1,835 2,312 2,890 2,936 3,400 3,670 5,780 6,239 7,225 7,340 9,175 11,560 12,478 14,450 14,680 18,350 24,956 28,900 31,195 36,700 49,912 57,800 62,390 73,400 106,063 124,780 155,975 212,126 249,560 311,950 424,252 530,315 623,900 848,504 1,060,630 1,247,800 2,121,260 2,651,575 4,242,520 5,303,150 10,606,300 and 21,212,600, with no remainder.

Since 21,212,600 cannot be divided by just 1 and 21,212,600, 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).