Q: Is 2,129,820 a Composite Number?

Why is 2,129,820 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 2,129,820 can be evenly divided by 1 2 3 4 5 6 7 10 11 12 14 15 20 21 22 28 30 33 35 42 44 55 60 66 70 77 84 105 110 132 140 154 165 210 220 231 308 330 385 420 461 462 660 770 922 924 1,155 1,383 1,540 1,844 2,305 2,310 2,766 3,227 4,610 4,620 5,071 5,532 6,454 6,915 9,220 9,681 10,142 12,908 13,830 15,213 16,135 19,362 20,284 25,355 27,660 30,426 32,270 35,497 38,724 48,405 50,710 60,852 64,540 70,994 76,065 96,810 101,420 106,491 141,988 152,130 177,485 193,620 212,982 304,260 354,970 425,964 532,455 709,940 1,064,910 and 2,129,820, with no remainder.

Since 2,129,820 cannot be divided by just 1 and 2,129,820, 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).