Q: Is 20,001,520 a Composite Number?

Why is 20,001,520 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 20,001,520 can be evenly divided by 1 2 4 5 7 8 10 11 14 16 17 20 22 28 34 35 40 44 55 56 68 70 77 80 85 88 110 112 119 136 140 154 170 176 187 191 220 238 272 280 308 340 374 382 385 440 476 560 595 616 680 748 764 770 880 935 952 955 1,190 1,232 1,309 1,337 1,360 1,496 1,528 1,540 1,870 1,904 1,910 2,101 2,380 2,618 2,674 2,992 3,056 3,080 3,247 3,740 3,820 4,202 4,760 5,236 5,348 6,160 6,494 6,545 6,685 7,480 7,640 8,404 9,520 10,472 10,505 10,696 12,988 13,090 13,370 14,707 14,960 15,280 16,235 16,808 20,944 21,010 21,392 22,729 25,976 26,180 26,740 29,414 32,470 33,616 35,717 42,020 45,458 51,952 52,360 53,480 58,828 64,940 71,434 73,535 84,040 90,916 104,720 106,960 113,645 117,656 129,880 142,868 147,070 168,080 178,585 181,832 227,290 235,312 250,019 259,760 285,736 294,140 357,170 363,664 454,580 500,038 571,472 588,280 714,340 909,160 1,000,076 1,176,560 1,250,095 1,428,680 1,818,320 2,000,152 2,500,190 2,857,360 4,000,304 5,000,380 10,000,760 and 20,001,520, with no remainder.

Since 20,001,520 cannot be divided by just 1 and 20,001,520, 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).