Q: Is 21,132,144 a Composite Number?

Why is 21,132,144 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 21,132,144 can be evenly divided by 1 2 3 4 6 8 9 11 12 16 18 22 24 27 33 36 44 48 54 66 72 88 99 108 132 144 176 198 216 264 297 396 432 528 594 792 1,188 1,584 2,376 4,447 4,752 8,894 13,341 17,788 26,682 35,576 40,023 48,917 53,364 71,152 80,046 97,834 106,728 120,069 146,751 160,092 195,668 213,456 240,138 293,502 320,184 391,336 440,253 480,276 587,004 640,368 782,672 880,506 960,552 1,174,008 1,320,759 1,761,012 1,921,104 2,348,016 2,641,518 3,522,024 5,283,036 7,044,048 10,566,072 and 21,132,144, with no remainder.

Since 21,132,144 cannot be divided by just 1 and 21,132,144, 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).