INFORMATION

PRIME NUMBERS

A prime number is an integer greater than 1 and has exacly two factors: 1 and itself. The other positive integers are called composite numbers.

WHAT IS PRIME NUMBER CHECKER?

Prime number checker,

• Tests whether a given number is prime or not,

• Provided that the given number is composite, the prime number checker

  • finds the prime factors using upside-down division method,
  • lists the factors of the given number,
  • finds the closest prime number greater than the given number and
  • finds the closest prime number less than the given number.

HOW TO USE THE PRIME NUMBER CHECKER?

You can use the prime number checker in two ways.

• USER INPUTS

  

  You can enter a whole number to the input box and click on the "CHECK" button. The result and explanations appaer below the calculator

• RANDOM INPUTS

  

  You can click on the DIE ICON next to the input box. If you use this property, a random number is generated and entered to the calculator, automatically. You can see the result and explanations below the calculator. You can create your own examples and practice using this property.

• ILLUSTRATION OF THE RESULT

  

  The result is illustrated by tick and cross icons. Tick means the entered number is prime and the cross symbol on the screen means that the number that you enter is composite.

• CLEARING THE INPUT BOX

  

  To check the primality of another number, you can clear the input box by clicking on the CLEAR button under the input box.

• COPYING & DOWNLOADING THE SOLUTION

  • 

    You can copy the generated solution by clicking on the "Copy Text" link, appaers under the solution panel.

  • 

    Even you can download the solution as an image file with .jpg extension if you click on the "Download Solution" link at the bottom of the solution panel. You can share the downloaded image file.