Q: Is 21,102,120 a Composite Number?

Why is 21,102,120 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 21,102,120 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 13 15 18 20 24 26 27 30 36 39 40 45 52 54 60 65 72 78 81 90 104 108 117 120 130 135 156 162 167 180 195 216 234 243 260 270 312 324 334 351 360 390 405 468 486 501 520 540 585 648 668 702 780 810 835 936 972 1,002 1,053 1,080 1,170 1,215 1,336 1,404 1,503 1,560 1,620 1,670 1,755 1,944 2,004 2,106 2,171 2,340 2,430 2,505 2,808 3,006 3,159 3,240 3,340 3,510 4,008 4,212 4,342 4,509 4,680 4,860 5,010 5,265 6,012 6,318 6,513 6,680 7,020 7,515 8,424 8,684 9,018 9,720 10,020 10,530 10,855 12,024 12,636 13,026 13,527 14,040 15,030 15,795 17,368 18,036 19,539 20,040 21,060 21,710 22,545 25,272 26,052 27,054 30,060 31,590 32,565 36,072 39,078 40,581 42,120 43,420 45,090 52,104 54,108 58,617 60,120 63,180 65,130 67,635 78,156 81,162 86,840 90,180 97,695 108,216 117,234 126,360 130,260 135,270 156,312 162,324 175,851 180,360 195,390 202,905 234,468 260,520 270,540 293,085 324,648 351,702 390,780 405,810 468,936 527,553 541,080 586,170 703,404 781,560 811,620 879,255 1,055,106 1,172,340 1,406,808 1,623,240 1,758,510 2,110,212 2,344,680 2,637,765 3,517,020 4,220,424 5,275,530 7,034,040 10,551,060 and 21,102,120, with no remainder.

Since 21,102,120 cannot be divided by just 1 and 21,102,120, 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).