Q: Is 257,040 a Composite Number?

Why is 257,040 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 257,040 can be evenly divided by 1 2 3 4 5 6 7 8 9 10 12 14 15 16 17 18 20 21 24 27 28 30 34 35 36 40 42 45 48 51 54 56 60 63 68 70 72 80 84 85 90 102 105 108 112 119 120 126 135 136 140 144 153 168 170 180 189 204 210 216 238 240 252 255 270 272 280 306 315 336 340 357 360 378 408 420 432 459 476 504 510 540 560 595 612 630 680 714 720 756 765 816 840 918 945 952 1,008 1,020 1,071 1,080 1,190 1,224 1,260 1,360 1,428 1,512 1,530 1,680 1,785 1,836 1,890 1,904 2,040 2,142 2,160 2,295 2,380 2,448 2,520 2,856 3,024 3,060 3,213 3,570 3,672 3,780 4,080 4,284 4,590 4,760 5,040 5,355 5,712 6,120 6,426 7,140 7,344 7,560 8,568 9,180 9,520 10,710 12,240 12,852 14,280 15,120 16,065 17,136 18,360 21,420 25,704 28,560 32,130 36,720 42,840 51,408 64,260 85,680 128,520 and 257,040, with no remainder.

Since 257,040 cannot be divided by just 1 and 257,040, 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).