Q: Is 1,521,520 a Composite Number?

Why is 1,521,520 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 1,521,520 can be evenly divided by 1 2 4 5 7 8 10 11 13 14 16 19 20 22 26 28 35 38 40 44 52 55 56 65 70 76 77 80 88 91 95 104 110 112 130 133 140 143 152 154 176 182 190 208 209 220 247 260 266 280 286 304 308 364 380 385 418 440 455 494 520 532 560 572 616 665 715 728 760 770 836 880 910 988 1,001 1,040 1,045 1,064 1,144 1,232 1,235 1,330 1,430 1,456 1,463 1,520 1,540 1,672 1,729 1,820 1,976 2,002 2,090 2,128 2,288 2,470 2,660 2,717 2,860 2,926 3,080 3,344 3,458 3,640 3,952 4,004 4,180 4,940 5,005 5,320 5,434 5,720 5,852 6,160 6,916 7,280 7,315 8,008 8,360 8,645 9,880 10,010 10,640 10,868 11,440 11,704 13,585 13,832 14,630 16,016 16,720 17,290 19,019 19,760 20,020 21,736 23,408 27,170 27,664 29,260 34,580 38,038 40,040 43,472 54,340 58,520 69,160 76,076 80,080 95,095 108,680 117,040 138,320 152,152 190,190 217,360 304,304 380,380 760,760 and 1,521,520, with no remainder.

Since 1,521,520 cannot be divided by just 1 and 1,521,520, 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).