Q: Is 1,221,660 a Composite Number?

Why is 1,221,660 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 1,221,660 can be evenly divided by 1 2 3 4 5 6 9 10 11 12 15 18 20 22 30 33 36 44 45 55 60 66 90 99 110 132 165 180 198 220 330 396 495 617 660 990 1,234 1,851 1,980 2,468 3,085 3,702 5,553 6,170 6,787 7,404 9,255 11,106 12,340 13,574 18,510 20,361 22,212 27,148 27,765 33,935 37,020 40,722 55,530 61,083 67,870 81,444 101,805 111,060 122,166 135,740 203,610 244,332 305,415 407,220 610,830 and 1,221,660, with no remainder.

Since 1,221,660 cannot be divided by just 1 and 1,221,660, 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).