Q: Is 21,303,120 a Composite Number?

Why is 21,303,120 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 21,303,120 can be evenly divided by 1 2 3 4 5 6 8 10 12 15 16 20 24 30 37 40 48 60 74 80 111 120 148 185 222 240 296 370 444 555 592 740 888 1,110 1,480 1,776 2,220 2,399 2,960 4,440 4,798 7,197 8,880 9,596 11,995 14,394 19,192 23,990 28,788 35,985 38,384 47,980 57,576 71,970 88,763 95,960 115,152 143,940 177,526 191,920 266,289 287,880 355,052 443,815 532,578 575,760 710,104 887,630 1,065,156 1,331,445 1,420,208 1,775,260 2,130,312 2,662,890 3,550,520 4,260,624 5,325,780 7,101,040 10,651,560 and 21,303,120, with no remainder.

Since 21,303,120 cannot be divided by just 1 and 21,303,120, 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).