esc
Fraction to decimalCalculatorsWord counterTextCharacter counterTextRemove duplicate linesTextJSON formatterDeveloperUnix timestamp converterDeveloperRegex testerDeveloperQuery string parserDeveloperAge calculatorDate & timeTimezone converterDate & timeKilograms to poundsConvertersPounds to kilogramsConvertersCentimeters to inchesConvertersInches to centimetersConvertersMeters to feetConvertersFeet to metersConvertersKilometers to milesConvertersMiles to kilometersConvertersCelsius to FahrenheitConvertersFahrenheit to CelsiusConvertersFeet to inchesConvertersInches to feetConvertersMeters to yardsConvertersYards to metersConverters
  1. Home
  2. Calculators
  3. Prime number checker

Prime number checker

Enter an integer to test.

Result
No result yet.

17 is a prime number.

Example

Check whether a number is prime.

17 is a prime number.

Processed locally in your browser.

Methodology

A prime number has exactly two distinct divisors: 1 and itself.

Related tools