Is There a Formula for Prime Number Factorization?

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Discussion Overview

The discussion revolves around the existence of a formula for prime number factorization, particularly in the context of factoring large integers into their prime components. Participants explore the challenges and methodologies related to this topic, including its implications in cryptography.

Discussion Character

  • Debate/contested

Main Points Raised

  • One participant questions whether a formula exists for prime number factorization or if it is inherently impossible, suggesting that brute force methods may be necessary.
  • Another participant clarifies that the term 'prime number factorisation' might be confusing and proposes that the discussion is about finding prime factors of an arbitrarily large number N.
  • A participant confirms the focus on factoring large integers, noting that the most challenging cases involve products of two large primes of similar size, which are relevant in cryptographic contexts.
  • It is mentioned that while algorithms for factoring numbers into primes do exist, they are not efficient, and it is generally faster to determine if a number is prime than to find its prime factorization.

Areas of Agreement / Disagreement

Participants appear to agree that algorithms for prime factorization exist but disagree on the efficiency and practicality of these methods, particularly regarding their application to large integers.

Contextual Notes

The discussion highlights limitations in the efficiency of existing algorithms and the specific challenges posed by large primes, but does not resolve the question of whether a general formula for prime factorization can be established.

MathJakob
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I've been looking into prime number factorisation and was wondering does a formula actually exist or is it thought to be impossible to factor primes using a formula and they need to be factored using brute force?
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Maybe the OP is talking about taking an arbitrarily large number N and finding all of its prime factors. I think the terminology 'prime number factorisation' is somewhat confusing.

For instance, 12 = 2*2*3
 
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Yes that is what I'm talking about, sorry for the confusion

"The most difficult integers to factor in practice using existing algorithms are those that are products of two large primes of similar size, and for this reason these are the integers used in cryptographic applications."

http://en.wikipedia.org/wiki/Integer_factorization
 
Yes, algorithms for factoring numbers into primes exist. But they're not very fast. Currently, it is much easier (=faster) to check if something is prime or not than to actually find a primal decomposition.
 

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