Generate Prime Numbers

Prime Number Generator


Welcome to the Prime Number Generator! This tool enables you to quickly generate prime numbers within a specified range. Prime numbers are crucial in various fields, including cryptography, number theory, and computer science. With this tool, you can effortlessly obtain prime numbers for your mathematical and computational needs.

Steps to Use the Tool:

  1. Set the upper limit for prime number generation.
  2. Click the "Generate Primes" button.
  3. View the list of generated prime numbers in the output area.

Functionality: The Prime Number Generator employs a JavaScript algorithm to efficiently identify prime numbers within the specified range. It utilizes the Sieve of Eratosthenes algorithm, a classic method for finding primes, which eliminates multiples of each prime number starting from 2 up to the square root of the upper limit.


  • Fast and Efficient: Utilizes optimized algorithms to swiftly compute prime numbers within the specified range.
  • Customizable: Users can specify the upper limit based on their requirements, allowing flexibility in generating prime numbers of varying magnitudes.
  • Educational: Offers insight into prime number generation algorithms, aiding in understanding fundamental concepts in number theory and algorithm design.


  1. What are prime numbers?
    • Prime numbers are natural numbers greater than 1 that have no positive divisors other than 1 and themselves.
  2. How does the tool generate prime numbers?
    • It employs the Sieve of Eratosthenes algorithm, systematically eliminating multiples of prime numbers to identify all prime numbers within the specified range.
  3. Can I generate prime numbers beyond a limit of 1000?
    • Yes, you can adjust the upper limit parameter in the function call to generate prime numbers up to the desired limit.