 ##  [Number Field Sieve](/number-field-sieve) 

  ##  [Number Field Sieve](https://puremath.quantumdictionary.io/number-field-sieve-0) 

  

 [![Pure Mathematics Dictionary](/sites/default/files/styles/large/public/2026-01/Pure%20Mathematics.png.webp?itok=5pZnFQ59)](/topic-specific-dictionaries/mathematics-logic/pure-mathematics)

- Mathematics &amp; Logic -

**Pure Mathematics Dictionary**

 







 

 

 

 



 

 

 

 

Definition

The asymptotically fastest known classical integer factorization algorithm for very large integers, which uses algebraic number fields, polynomial selection, sieving of norms and large-scale linear algebra to produce relations that yield congruences of squares modulo n.