Q: Is 2,145,900 a Composite Number?

Why is 2,145,900 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 2,145,900 can be evenly divided by 1 2 3 4 5 6 10 12 15 20 23 25 30 46 50 60 69 75 92 100 115 138 150 230 276 300 311 345 460 575 622 690 933 1,150 1,244 1,380 1,555 1,725 1,866 2,300 3,110 3,450 3,732 4,665 6,220 6,900 7,153 7,775 9,330 14,306 15,550 18,660 21,459 23,325 28,612 31,100 35,765 42,918 46,650 71,530 85,836 93,300 107,295 143,060 178,825 214,590 357,650 429,180 536,475 715,300 1,072,950 and 2,145,900, with no remainder.

Since 2,145,900 cannot be divided by just 1 and 2,145,900, 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).