Math K-Plus

Prime Number Calculator, 1- 1000 Prime Numbers

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What Is A Prime Number?


A Natural Number is called Prime Number if it has exactly two positive divisors, the number one (1) and the number itself. prime numbers starts at the number two (2) and continue to infinity. Example: 2, 3, 5, 7, 11, 13, 17, 19, 23, ... infinity.

Notice numbers 4, 6, 8, 9, 10, 12, 14, 15, 16, 18, 20, 21, 22, ... are not shown because they are Composite Numbers. To see what numbers between 1 and 1000, use he prime number calculator.




Please read! To use this calculator is easy. Enter any number 1 to 1000, and the calculator will determine if it is a prime number.

Prime Numbers Calculator
Enter The Number Here Then Press The SUBMIT Button