Q: Is 20,751,120 a Composite Number?

Why is 20,751,120 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 20,751,120 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 13 15 16 18 20 24 26 27 30 36 39 40 45 48 52 54 60 65 72 78 80 90 104 108 117 120 130 135 144 156 180 195 208 216 234 240 260 270 312 351 360 390 432 468 520 540 585 624 702 720 739 780 936 1,040 1,080 1,170 1,404 1,478 1,560 1,755 1,872 2,160 2,217 2,340 2,808 2,956 3,120 3,510 3,695 4,434 4,680 5,616 5,912 6,651 7,020 7,390 8,868 9,360 9,607 11,085 11,824 13,302 14,040 14,780 17,736 19,214 19,953 22,170 26,604 28,080 28,821 29,560 33,255 35,472 38,428 39,906 44,340 48,035 53,208 57,642 59,120 66,510 76,856 79,812 86,463 88,680 96,070 99,765 106,416 115,284 133,020 144,105 153,712 159,624 172,926 177,360 192,140 199,530 230,568 259,389 266,040 288,210 319,248 345,852 384,280 399,060 432,315 461,136 518,778 532,080 576,420 691,704 768,560 798,120 864,630 1,037,556 1,152,840 1,296,945 1,383,408 1,596,240 1,729,260 2,075,112 2,305,680 2,593,890 3,458,520 4,150,224 5,187,780 6,917,040 10,375,560 and 20,751,120, with no remainder.

Since 20,751,120 cannot be divided by just 1 and 20,751,120, 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).