Q: Is 128,520 a Composite Number?

Why is 128,520 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 128,520 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 17 18 20 21 24 27 28 30 34 35 36 40 42 45 51 54 56 60 63 68 70 72 84 85 90 102 105 108 119 120 126 135 136 140 153 168 170 180 189 204 210 216 238 252 255 270 280 306 315 340 357 360 378 408 420 459 476 504 510 540 595 612 630 680 714 756 765 840 918 945 952 1,020 1,071 1,080 1,190 1,224 1,260 1,428 1,512 1,530 1,785 1,836 1,890 2,040 2,142 2,295 2,380 2,520 2,856 3,060 3,213 3,570 3,672 3,780 4,284 4,590 4,760 5,355 6,120 6,426 7,140 7,560 8,568 9,180 10,710 12,852 14,280 16,065 18,360 21,420 25,704 32,130 42,840 64,260 and 128,520, with no remainder.

Since 128,520 cannot be divided by just 1 and 128,520, 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).