cached-primes

This package provides O(1) lookup for the first 1 million prime numbers.

Install

npm install cached-primes

Usage

var cp = require('cached-primes');
 
// check if a number is a prime number
cp.isPrime(97127);     // true
 
// get the kth prime number
cp.getPrime(1);        // 2
cp.getPrime(1000000);  // 15485863