Factorizer
A Factorization and Prime Number Program
 Testimonials

1. Introduction

Factorizer is a Windows program to find factors of numbers up to 2,147,483,646 and to find primes, pairs of primes and Palmen colors of numbers.

Or in more detail, Factorizer may be used:
(1) to get the prime decomposition of all numbers in a range of numbers,
(2) to get all factors of a single number or all factors of all numbers in a range,
(3) to find only the prime numbers in a range of numbers,
(4) to find pairs of prime numbers (e.g. 107 and 109) in a certain range,
(5) to count (without displaying) the prime numbers in a range of numbers.
(6) to find Fermat and Mersenne primes < 2,147,483,647
(7) to find the Palmen color of a number or the colors of a range of numbers.

In addition a "filter" condition may be set to allow examination of numbers with a constant offset from an arithmetical or a geometrical progression, e.g., just those numbers of the form 7*n - 12 or 10n + 2.

Here is a typical screenshot:

screenshot

The text in the output window can be edited, so you can remove unwanted output and add your own comments before copying to the clipboard for transfer to another program such as a text editor.

Examples of the use of the program are given below, first without a filter condition in effect, then with various filters in effect.

Following accepted mathematical convention, the number 1 is not held to be a prime number.

The remainder of the user manual is in the following sections:

 
  1. Operation Without Filter Condition
    1. Factor all numbers in a certain range
    2. Display primes only
    3. Count primes only
    4. Display prime pairs only
    5. Display all factors of numbers
  2. Operation With Filter Condition
  3. Palmen Colors
  4. Plotting the Palmen Color Frequencies
  5. Plotting the Prime Factor Frequencies
  6. Plotting the Erdös-Kac histograms
  7. Saving graph images
 
   

How to obtain the software: A trial version of the Factorizer software can be downloaded from this website. Click on the following link to go to a web page with further information about the trial version:

Download Factorizer ...



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Price and ordering: A single-user license for Factorizer costs $9.95, €6.95 or £5.95 (excluding any sales tax). Purchase via any of the links at right.  After a user license has been purchased an activation key may be obtained by email to remove the limitations of the trial version. An activation key can be sent immediately if purchasing via PayPal or Share-it. (How?)

See also our offer of a discount with a multiple purchase via PayPal.

Refund: A refund will be provided promptly up to thirty days after purchase if the software does not perform satisfactorily.

Updates: Purchasers of a user license for this software are entitled to an update to any later version at no additional cost.

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