Q: Is 2,451,225 a Composite Number?

Why is 2,451,225 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 2,451,225 can be evenly divided by 1 3 5 7 15 21 23 25 29 35 49 69 75 87 105 115 145 147 161 175 203 245 345 435 483 525 575 609 667 725 735 805 1,015 1,127 1,225 1,421 1,725 2,001 2,175 2,415 3,045 3,335 3,381 3,675 4,025 4,263 4,669 5,075 5,635 7,105 10,005 12,075 14,007 15,225 16,675 16,905 21,315 23,345 28,175 32,683 35,525 50,025 70,035 84,525 98,049 106,575 116,725 163,415 350,175 490,245 817,075 and 2,451,225, with no remainder.

Since 2,451,225 cannot be divided by just 1 and 2,451,225, 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).