__ __ __ _ ___
/ / / // /___ _ __ _ ( )___ / _ \ ___ _ __ ___ ___ ___ _ ___
/ /_/ // // _ `// ' \|/(_-< / , _// -_)| |/ // -_)/ _ \/ _ `// -_)
\____//_/ \_,_//_/_/_/ /___/ /_/|_| \__/ |___/ \__//_//_/\_, / \__/
Prime Spiral Generator /___/
Black: numer zero or one
White: prime number
Red: odd unique factors
Blue: even unique factors
Green: no unique factors
• Color dot: distinct prime factors
• Black dot: n^2 + n + 41 (Euler's)
Be careful with browser performance.
by Alexandre Gomes Gaigalas, code derived from
Miroslav Magda's Javascript implementation of the Ulam Spiral.