Q: Is 21,121,450 a Composite Number?

Why is 21,121,450 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 21,121,450 can be evenly divided by 1 2 5 7 10 14 25 35 37 49 50 70 74 98 175 185 233 245 259 350 370 466 490 518 925 1,165 1,225 1,295 1,631 1,813 1,850 2,330 2,450 2,590 3,262 3,626 5,825 6,475 8,155 8,621 9,065 11,417 11,650 12,950 16,310 17,242 18,130 22,834 40,775 43,105 45,325 57,085 60,347 81,550 86,210 90,650 114,170 120,694 215,525 285,425 301,735 422,429 431,050 570,850 603,470 844,858 1,508,675 2,112,145 3,017,350 4,224,290 10,560,725 and 21,121,450, with no remainder.

Since 21,121,450 cannot be divided by just 1 and 21,121,450, 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).