Q: Is 1,321,320 a Composite Number?

Why is 1,321,320 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 1,321,320 can be evenly divided by 1 2 3 4 5 6 7 8 10 11 12 13 14 15 20 21 22 24 26 28 30 33 35 39 40 42 44 52 55 56 60 65 66 70 77 78 84 88 91 104 105 110 120 121 130 132 140 143 154 156 165 168 182 195 210 220 231 242 260 264 273 280 286 308 312 330 363 364 385 390 420 429 440 455 462 484 520 546 572 605 616 660 715 726 728 770 780 840 847 858 910 924 968 1,001 1,092 1,144 1,155 1,210 1,320 1,365 1,430 1,452 1,540 1,560 1,573 1,694 1,716 1,815 1,820 1,848 2,002 2,145 2,184 2,310 2,420 2,541 2,730 2,860 2,904 3,003 3,080 3,146 3,388 3,432 3,630 3,640 4,004 4,235 4,290 4,620 4,719 4,840 5,005 5,082 5,460 5,720 6,006 6,292 6,776 7,260 7,865 8,008 8,470 8,580 9,240 9,438 10,010 10,164 10,920 11,011 12,012 12,584 12,705 14,520 15,015 15,730 16,940 17,160 18,876 20,020 20,328 22,022 23,595 24,024 25,410 30,030 31,460 33,033 33,880 37,752 40,040 44,044 47,190 50,820 55,055 60,060 62,920 66,066 88,088 94,380 101,640 110,110 120,120 132,132 165,165 188,760 220,220 264,264 330,330 440,440 660,660 and 1,321,320, with no remainder.

Since 1,321,320 cannot be divided by just 1 and 1,321,320, 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).