Q: Is 20,121,120 a Composite Number?

Why is 20,121,120 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 20,121,120 can be evenly divided by 1 2 3 4 5 6 8 9 10 12 15 16 18 20 24 30 32 36 40 45 48 60 72 80 89 90 96 120 144 157 160 178 180 240 267 288 314 356 360 445 471 480 534 628 712 720 785 801 890 942 1,068 1,256 1,335 1,413 1,424 1,440 1,570 1,602 1,780 1,884 2,136 2,355 2,512 2,670 2,826 2,848 3,140 3,204 3,560 3,768 4,005 4,272 4,710 5,024 5,340 5,652 6,280 6,408 7,065 7,120 7,536 8,010 8,544 9,420 10,680 11,304 12,560 12,816 13,973 14,130 14,240 15,072 16,020 18,840 21,360 22,608 25,120 25,632 27,946 28,260 32,040 37,680 41,919 42,720 45,216 55,892 56,520 64,080 69,865 75,360 83,838 111,784 113,040 125,757 128,160 139,730 167,676 209,595 223,568 226,080 251,514 279,460 335,352 419,190 447,136 503,028 558,920 628,785 670,704 838,380 1,006,056 1,117,840 1,257,570 1,341,408 1,676,760 2,012,112 2,235,680 2,515,140 3,353,520 4,024,224 5,030,280 6,707,040 10,060,560 and 20,121,120, with no remainder.

Since 20,121,120 cannot be divided by just 1 and 20,121,120, 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).