primes.js

primes.js is a very, very simple prime number checker and generator

It caches prime numbers so that repeated calls rely on previous work done in finding primes to improve performance

• Install: npm install git://github.com/dthwaite/Primes

• Test: npm test primes

• Uninstall: npm uninstall primes

Usage:

in node:

    var Primes = require('primes');

    Primes.isPrime(31); // true
    Primes.nextPrime(31); // 37

in the browser (loading from CDN):

    <script src="https://cdn.rawgit.com/dthwaite/Primes/master/lib/primes.min.js"></script>

    Primes.isPrime(31); // true
    Primes.nextPrime(31); // 37

API

Supported methods: isPrime, nextPrime

isPrime

	if (Primes.isPrime(31)) console.log("31 is a prime number");

nextPrime

	console.log(Primes.nextPrime(32)+" is the next prime after 32");