Class TDiv31

java.lang.Object
de.tilman_neumann.jml.factor.FactorAlgorithm
de.tilman_neumann.jml.factor.tdiv.TDiv31

public class TDiv31
extends FactorAlgorithm
Trial division factor algorithm using the safe AutoExpandingPrimesArray class.
  • Field Summary

    Fields inherited from class de.tilman_neumann.jml.factor.FactorAlgorithm

    NUM_PRIMES_FOR_31_BIT_TDIV, tdivLimit
  • Constructor Summary

    Constructors
    Constructor Description
    TDiv31()  
  • Method Summary

    Modifier and Type Method Description
    void factor​(java.math.BigInteger Nbig, SortedMultiset<java.math.BigInteger> primeFactors)
    Decomposes the argument N into prime factors.
    int findSingleFactor​(int N)  
    java.math.BigInteger findSingleFactor​(java.math.BigInteger N)
    Find a single factor of the given N, which is composite and odd.
    java.lang.String getName()  

    Methods inherited from class de.tilman_neumann.jml.factor.FactorAlgorithm

    factor, getDefault, searchFactors

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
  • Constructor Details

    • TDiv31

      public TDiv31()
  • Method Details

    • getName

      public java.lang.String getName()
      Specified by:
      getName in class FactorAlgorithm
      Returns:
      The name of the algorithm, possibly including important parameters.
    • factor

      public void factor​(java.math.BigInteger Nbig, SortedMultiset<java.math.BigInteger> primeFactors)
      Description copied from class: FactorAlgorithm
      Decomposes the argument N into prime factors.
      Overrides:
      factor in class FactorAlgorithm
      Parameters:
      Nbig - Number to factor.
      primeFactors - a map to which found factors are added
    • findSingleFactor

      public java.math.BigInteger findSingleFactor​(java.math.BigInteger N)
      Description copied from class: FactorAlgorithm
      Find a single factor of the given N, which is composite and odd.
      Specified by:
      findSingleFactor in class FactorAlgorithm
      Parameters:
      N - number to be factored.
      Returns:
      factor
    • findSingleFactor

      public int findSingleFactor​(int N)