Q: Is 1,681,680 a Composite Number?

Why is 1,681,680 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 1,681,680 can be evenly divided by 1 2 3 4 5 6 7 8 10 11 12 13 14 15 16 20 21 22 24 26 28 30 33 35 39 40 42 44 48 49 52 55 56 60 65 66 70 77 78 80 84 88 91 98 104 105 110 112 120 130 132 140 143 147 154 156 165 168 176 182 195 196 208 210 220 231 240 245 260 264 273 280 286 294 308 312 330 336 364 385 390 392 420 429 440 455 462 490 520 528 539 546 560 572 588 616 624 637 660 715 728 735 770 780 784 840 858 880 910 924 980 1,001 1,040 1,078 1,092 1,144 1,155 1,176 1,232 1,274 1,320 1,365 1,430 1,456 1,470 1,540 1,560 1,617 1,680 1,716 1,820 1,848 1,911 1,960 2,002 2,145 2,156 2,184 2,288 2,310 2,352 2,548 2,640 2,695 2,730 2,860 2,940 3,003 3,080 3,120 3,185 3,234 3,432 3,640 3,696 3,822 3,920 4,004 4,290 4,312 4,368 4,620 5,005 5,096 5,390 5,460 5,720 5,880 6,006 6,160 6,370 6,468 6,864 7,007 7,280 7,644 8,008 8,085 8,580 8,624 9,240 9,555 10,010 10,192 10,780 10,920 11,440 11,760 12,012 12,740 12,936 14,014 15,015 15,288 16,016 16,170 17,160 18,480 19,110 20,020 21,021 21,560 21,840 24,024 25,480 25,872 28,028 30,030 30,576 32,340 34,320 35,035 38,220 40,040 42,042 43,120 48,048 50,960 56,056 60,060 64,680 70,070 76,440 80,080 84,084 105,105 112,112 120,120 129,360 140,140 152,880 168,168 210,210 240,240 280,280 336,336 420,420 560,560 840,840 and 1,681,680, with no remainder.

Since 1,681,680 cannot be divided by just 1 and 1,681,680, 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).