Q: Is 21,716,120 a Composite Number?

Why is 21,716,120 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 21,716,120 can be evenly divided by 1 2 4 5 8 10 20 31 40 62 83 124 155 166 211 248 310 332 415 422 620 664 830 844 1,055 1,240 1,660 1,688 2,110 2,573 3,320 4,220 5,146 6,541 8,440 10,292 12,865 13,082 17,513 20,584 25,730 26,164 32,705 35,026 51,460 52,328 65,410 70,052 87,565 102,920 130,820 140,104 175,130 261,640 350,260 542,903 700,520 1,085,806 2,171,612 2,714,515 4,343,224 5,429,030 10,858,060 and 21,716,120, with no remainder.

Since 21,716,120 cannot be divided by just 1 and 21,716,120, 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).