Prime Factorization Calculator

Find all prime factors of any positive integer. Decompose numbers into their fundamental prime components with detailed mathematical breakdown.

Prime Factorization Calculator

Find all prime factors of a positive integer. Maximum supported number: 9,007,199,254,740,991.

Enter a number above to find its prime factors

About Prime Factorization

What is Prime Factorization?

Prime factorization is the process of breaking down a number into its prime factors - prime numbers that multiply together to give the original number. According to the Fundamental Theorem of Arithmetic, every integer greater than 1 has a unique prime factorization.

Examples:

Applications:

  • Finding GCD and LCM
  • Simplifying fractions
  • Cryptography (RSA algorithm)
  • Number theory research

Algorithm:

Our calculator uses trial division, testing divisibility by 2, then odd numbers from 3 up to √n. This ensures efficient factorization for numbers up to 9,007,199,254,740,991.

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