Q: Is 71,820 a Composite Number?

Why is 71,820 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 71,820 can be evenly divided by 1 2 3 4 5 6 7 9 10 12 14 15 18 19 20 21 27 28 30 35 36 38 42 45 54 57 60 63 70 76 84 90 95 105 108 114 126 133 135 140 171 180 189 190 210 228 252 266 270 285 315 342 378 380 399 420 513 532 540 570 630 665 684 756 798 855 945 1,026 1,140 1,197 1,260 1,330 1,596 1,710 1,890 1,995 2,052 2,394 2,565 2,660 3,420 3,591 3,780 3,990 4,788 5,130 5,985 7,182 7,980 10,260 11,970 14,364 17,955 23,940 35,910 and 71,820, with no remainder.

Since 71,820 cannot be divided by just 1 and 71,820, 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).