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Last active Dec 29, 2015
Generate an array containing the prime factorisation of a positive integer.

# 140byt.es

A tweet-sized, fork-to-play, community-curated collection of JavaScript.

## How to play

1. Click the button above to fork this gist.
2. Modify all the files to according to the rules below.
3. Save your entry and tweet it up!

Keep in mind that thanks to the awesome sensibilities of the GitHub team, gists are just repos. So feel free to clone yours and work locally for a more comfortable environment, and to allow commit messages.

## Rules

All entries must exist in an `index.js` file, whose contents are

1. an assignable, valid Javascript expression that
2. contains no more than 140 bytes, and
3. does not leak to the global scope.

All entries must also be licensed under the WTFPL or equally permissive license.

See the 140byt.es site for a showcase of entries (built itself using 140-byte entries!), and follow @140bytes on Twitter.

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140byt.es is brought to you by Jed Schmidt, with help from Alex Kloss. It was inspired by work from Thomas Fuchs and Dustin Diaz.

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 function( x // The positive integer to factorise , i // An index , r // The array of results ) { r=[]; // Initialise the array for(;x>=2;) { // Anything less than 2 should be ignored, since there is no valid prime factorisation other than the empty array for(i=2;x%i;++i); // Starting at 2, we iterate, searching for a new factor. Note that a new factor is guaranteed to be prime, because any composite number has a prime factor less than it, which will have already been caught. r.push(i); // When we find a factor, the loop terminates, and we append this value x/=i // Run the whole thing again with the new factor removed } return r // Fin. }
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 function(x,i,r){r=[];for(;x>=2;){for(i=2;x%i;++i);r.push(i);x/=i}return r}
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 DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE Version 2, December 2004 Copyright (C) 2011 YOUR_NAME_HERE Everyone is permitted to copy and distribute verbatim or modified copies of this license document, and changing it is allowed as long as the name is changed. DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION 0. You just DO WHAT THE FUCK YOU WANT TO.
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 { "name": "primeFactorisation", "description": "Splits an integer into an array of its prime factors in ascending order.", "keywords": [ "math", "prime", "factorization" ] }
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 Prime Factorisation of Positive Integers
Expected value: 6857
Actual value: