Q: Is 28,321 a Prime Number?

A: No, 28,321 is not a prime number.

Why is 28,321 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 28321 can be evenly divided by 1 127 223 and 28,321, with no remainder.

Since 28,321 cannot be divided by just 1 and 28,321, it is not a prime number.

Number	28,319	28,320	28,322	28,323
Prime?	yes	no	no	no

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