Q: Is 2,155,500 a Composite Number?

Why is 2,155,500 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 2,155,500 can be evenly divided by 1 2 3 4 5 6 9 10 12 15 18 20 25 30 36 45 50 60 75 90 100 125 150 180 225 250 300 375 450 479 500 750 900 958 1,125 1,437 1,500 1,916 2,250 2,395 2,874 4,311 4,500 4,790 5,748 7,185 8,622 9,580 11,975 14,370 17,244 21,555 23,950 28,740 35,925 43,110 47,900 59,875 71,850 86,220 107,775 119,750 143,700 179,625 215,550 239,500 359,250 431,100 538,875 718,500 1,077,750 and 2,155,500, with no remainder.

Since 2,155,500 cannot be divided by just 1 and 2,155,500, 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).