Q: Is 2,776,725 a Composite Number?

Why is 2,776,725 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 2,776,725 can be evenly divided by 1 3 5 7 9 15 21 25 35 41 43 45 63 75 105 123 129 175 205 215 225 287 301 315 369 387 525 615 645 861 903 1,025 1,075 1,435 1,505 1,575 1,763 1,845 1,935 2,583 2,709 3,075 3,225 4,305 4,515 5,289 7,175 7,525 8,815 9,225 9,675 12,341 12,915 13,545 15,867 21,525 22,575 26,445 37,023 44,075 61,705 64,575 67,725 79,335 111,069 132,225 185,115 308,525 396,675 555,345 925,575 and 2,776,725, with no remainder.

Since 2,776,725 cannot be divided by just 1 and 2,776,725, 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).