Q: Is 171,720 a Composite Number?

Why is 171,720 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 171,720 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 18 20 24 27 30 36 40 45 53 54 60 72 81 90 106 108 120 135 159 162 180 212 216 265 270 318 324 360 405 424 477 530 540 636 648 795 810 954 1,060 1,080 1,272 1,431 1,590 1,620 1,908 2,120 2,385 2,862 3,180 3,240 3,816 4,293 4,770 5,724 6,360 7,155 8,586 9,540 11,448 14,310 17,172 19,080 21,465 28,620 34,344 42,930 57,240 85,860 and 171,720, with no remainder.

Since 171,720 cannot be divided by just 1 and 171,720, 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).