Factorizer is a Windows software to find factors of numbers up to 2,147,483,646 and to find primes, pairs of primes and Palmen colors of numbers. For factoring integers, finding primes and plotting associated histograms.

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.

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 software such as a text editor.

Examples of the use of the software 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.

Limitations:
* Factors numbers only up to 5,000
* Images of histograms cannot be saved

The license of this software is Free Trial Software, the price is $14.25, you can free download and get a free trial.