The R Project for Statistical Computing. Mathway: Math Problem Solver. HELM - CAA resources. HELM supports two CAA regimes for both self-testing and formal assessment. an integrated web-delivered CAA regime.

An alternative CD implementation. Solve Your Algebra Problems Online. Free Software - GIMPS. Pages available in Chinese, Dutch, and Italian.

Warning: These translations may not be up-to-date, use the Google widget as necessary: Powered by Translate Great Internet Mersenne Prime Search GIMPS Finding World Record Primes Since 1996 You are using the download mirror (browse) Version 27 released! This latest version of prime95 has been optimized for Intel's new AVX instruction set. Any modern personal computer with Windows, Mac OS X, Linux, or FreeBSD can participate. Math Gems.

Equations - EquationSheet.com. Whats Special About This Number? What's Special About This Number?

If you know a distinctive fact about a number not listed here, please e-mail me. Math. DAYTUM. The ACCOUNT link found to the right of the Daytum logo allows you to upgrade, downgrade or delete your account, as well as manage billing details and download your data.

Current Account. Displays the type of account, and the cost per month if applicable. Current Billing Information. The last 4 digits of your credit card, its expiration date, and the next scheduled charge if enrolled in a paid plan. Billing History. Download Your Data. Delete Your Account. Account Options. Common Questions. Curta-Simulator. THE CALCULATOR REFERENCE. Online Wind Chill Calculator, Weather Calculation. Sage - Tour. Home > Polyhedral toy > Yoshimoto Cube.

PDF Pad. Mathematical Atlas: A gateway to Mathematics. THE 47 SOCIETY. Ulam spiral. Ulam spiral of size 200×200. Black dots represent prime numbers. Diagonal, vertical, and horizontal lines with a high density of prime numbers are clearly visible. The Ulam spiral, or prime spiral (in other languages also called the Ulam Cloth) is a simple method of visualizing the prime numbers that reveals the apparent tendency of certain quadratic polynomials to generate unusually large numbers of primes.

It was discovered by the mathematician Stanislaw Ulam in 1963, while he was doodling during the presentation of a "long and very boring paper" at a scientific meeting. Shortly afterwards, in an early application of computer graphics, Ulam with collaborators Myron Stein and Mark Wells used MANIAC II at Los Alamos Scientific Laboratory to produce pictures of the spiral for numbers up to 65,000. Lychrel number. A Lychrel number is a natural number that cannot form a palindrome through the iterative process of repeatedly reversing its digits and adding the resulting numbers.

This process is sometimes called the 196-algorithm, after the most famous number associated with the process. In base ten, no Lychrel numbers have been yet proved to exist, but many, including 196, are suspected on heuristic[1] and statistical grounds. Algebraic Surfaces Gallery. Number Problem #1. How to Develop a Mindset for Math. Math uses made-up rules to create models and derive relationships.

When learning, I ask: What relationship does this model represent? What real-world items share this relationship? Does that relationship make sense to me? They’re simple questions, but they help me understand new topics. Math Education Textbooks rarely focus on understanding; it’s mostly solving problems with “plug and chug” formulas. Impress your friends with mental Math tricks » Fun Math Blog. See Math tricks on video at the Wild About Math!

Mathcasts page. Being able to perform arithmetic quickly and mentally can greatly boost your self-esteem, especially if you don't consider yourself to be very good at Math. And, getting comfortable with arithmetic might just motivate you to dive deeper into other things mathematical. This article presents nine ideas that will hopefully get you to look at arithmetic as a game, one in which you can see patterns among numbers and pick then apply the right trick to quickly doing the calculation. Triangle Calculator. Instructions Enter values three of the six sides and angles of the triangle and the other three values will be computed.

The number of significant values entered will determine the number of significant figures in the results. Frequently Asked Questions. Regular Polygon Calculator. Equations - EquationSheet.com. Equation Calculator & Solver. Quick-Start Guide When you enter an equation into the calculator, the calculator will begin by expanding (simplifying) the problem.

Then it will attempt to solve the equation by using one or more of the following: addition, subtraction, division, taking the square root of each side, factoring, and completing the square. Variables. The Lines Number: 40 337 956. Given a sum of single digit decimal numbers raised to single digit decimal exponents.

Take all the single digit numbers and the single digit exponents, and put them together in the order they appear to form a single, multi-digit number. NumberSpiral.com - Home. Mysterious number 6174. March 2006. Octomatics. Dimensionless Numbers. Enigma.swf (application/x-shockwave-flash Object) A Random Number. If you've reached this page, you have probably already given me a random number. Thanks! Now I'll explain what the point of that was. 111,111,111 x 111,111,111 - Palindromic Number.