Q: Is 21,213,120 a Composite Number?

Why is 21,213,120 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 21,213,120 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 19 20 24 30 32 38 40 48 57 60 64 76 80 95 96 114 120 152 160 190 192 228 240 285 304 320 380 456 480 570 608 760 912 960 1,140 1,163 1,216 1,520 1,824 2,280 2,326 3,040 3,489 3,648 4,560 4,652 5,815 6,080 6,978 9,120 9,304 11,630 13,956 17,445 18,240 18,608 22,097 23,260 27,912 34,890 37,216 44,194 46,520 55,824 66,291 69,780 74,432 88,388 93,040 110,485 111,648 132,582 139,560 176,776 186,080 220,970 223,296 265,164 279,120 331,455 353,552 372,160 441,940 530,328 558,240 662,910 707,104 883,880 1,060,656 1,116,480 1,325,820 1,414,208 1,767,760 2,121,312 2,651,640 3,535,520 4,242,624 5,303,280 7,071,040 10,606,560 and 21,213,120, with no remainder.

Since 21,213,120 cannot be divided by just 1 and 21,213,120, 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).