Q: Is 309,005 a Prime Number?

A: No, 309,005 is not a prime number.

Why is 309,005 not a prime number?

A prime number is a natural number, greater than one, that can only be divided by 1 and itself.

The number 309005 can be evenly divided by 1 5 23 115 2,687 13,435 61,801 and 309,005, with no remainder.

Since 309,005 cannot be divided by just 1 and 309,005, it is not a prime number.

Number	309,003	309,004	309,006	309,007
Prime?	no	no	no	yes

All positive natural numbers are either a prime number or a composite number (except the number 1, which is neither).

General Questions

Factoring Questions

Calculation Questions

Miscellaneous Questions