Integers

Random Number Generator will let you quickly generate thousands random numbers in seconds! You can choose from a wide array of options: integers vs. floating-point numbers, lower & upper limits, decimal places count, digits to use, negative numbers probability, hexadecimal & binary outputs, and much more! Screen, Clipboard, Text, CSV, XML, HTML, and XLS output formats are supported. Edit, undo/redo, sorting, printing, and statistics support...

The Prime Number Spiral (a.k.a. the Ulam Spiral) is formed by marking the prime numbers in a spiral arrangement of the natural numbers. This is software is for exploring the Prime Number Spiral.