Q: Is 6,427,785 a Composite Number?

Why is 6,427,785 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 6,427,785 can be evenly divided by 1 3 5 7 13 15 17 21 35 39 51 65 85 91 105 119 195 221 255 273 277 357 455 595 663 831 1,105 1,365 1,385 1,547 1,785 1,939 3,315 3,601 4,155 4,641 4,709 5,817 7,735 9,695 10,803 14,127 18,005 23,205 23,545 25,207 29,085 32,963 54,015 61,217 70,635 75,621 98,889 126,035 164,815 183,651 306,085 378,105 428,519 494,445 918,255 1,285,557 2,142,595 and 6,427,785, with no remainder.

Since 6,427,785 cannot be divided by just 1 and 6,427,785, 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).