Prime Number Calculator

Check whether an integer is prime and list its positive factors.

How this calculator works

Enter the values for integer. The result applies the displayed method and rounds only for presentation.

Formula / method

A prime integer greater than 1 has exactly two positive factors.

Worked example

Worked example: Integer = 97.

Assumptions and limitations

The inputs use the units shown and the displayed prime number calculator method applies to the situation being estimated.

This prime number calculator uses the stated formula and supplied units; unusual inputs, local rules or professional context can change the interpretation.