SquFoF31 (org.matheclipse:matheclipse-gpl 3.0.0 API)

java.lang.Object
- de.tilman_neumann.jml.factor.FactorAlgorithm
- - de.tilman_neumann.jml.factor.squfof.SquFoF31

```
public class SquFoF31
extends FactorAlgorithm
```
Shanks' SQUFOF algorithm, 31-bit version. This implementation works without fail for N <= 2^52 and is faster than SquFoF63 for N <= 2^51.

Author:

Tilman Neumann

Field Summary
- Fields inherited from class de.tilman_neumann.jml.factor.FactorAlgorithm
  DEFAULT, NUM_PRIMES_FOR_31_BIT_TDIV, tdivLimit

Constructor Summary

Constructors
Constructor Description

SquFoF31()

Method Summary

All Methods Static Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`long`	`findSingleFactor(long N)`	Find a factor of the given composite N. Warning: This method will not return when called with a prime argument.
`BigInteger`	`findSingleFactor(BigInteger N)`	Find a single factor of the given N, which is composite and odd.
`String`	`getName()`
`static void`	`main(String[] args)`	Test.
`protected Long`	`test(int Q_ip1)`

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

Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

- Constructor Detail
  - SquFoF31
```
public SquFoF31()
```
- Method Detail
  - getName
```
public String getName()
```
    Specified by:
    
    getName in class FactorAlgorithm
    
    Returns:
    
    The name of the algorithm, possibly including important parameters.
  - findSingleFactor
```
public BigInteger findSingleFactor(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
    
    Returns:
    
    factor
  - findSingleFactor
```
public long findSingleFactor(long N)
```
    Find a factor of the given composite N.
    
    Warning: This method will not return when called with a prime argument.
    
    Parameters:
    
    N - composite integer
    
    Returns:
    
    factor of N
  - test
```
protected Long test(int Q_ip1)
```
  - main
```
public static void main(String[] args)
```
    Test.
    
    Parameters:
    
    args - ignored