Project Euler 234(unsolved)

/**
 * Copyright uwi ( http://wonderfl.net/user/uwi )
 * MIT License ( http://www.opensource.org/licenses/mit-license.php )
 * Downloaded from: http://wonderfl.net/c/p8zo
 */

package {
    import flash.display.Sprite;
    import flash.text.TextField;
    import flash.utils.getTimer;
    // @see http://projecteuler.net/index.php?section=problems&id=234
    public class Euler234 extends Sprite {
        private var _tf : TextField;
  
        public function Euler234() {
            _tf = new TextField();
            _tf.width = 465;
            _tf.height = 465;
            addChild(_tf);
            
            var s : int = getTimer();
            t(solve());
            var g : int = getTimer();
            t((g - s) + " ms");
        }

        private function solve() : int
        {
            var primes : Array = doEratosthenes(1001000);
            var i : int, j : Number;
            var sum : Number = 0;
            for(i = 0;primes[i] <= 999983;i++){
                var pcur : int = primes[i];
                var pnex : int = primes[i + 1];
                var candi : Object = {};
                for(j = pcur * pcur + pcur;j < pnex * pnex;j+=pcur)candi[j] = candi[j] ? 2 : 1;
                for(j = pnex * pnex - pnex;j > pcur * pcur;j-=pcur)candi[j] = candi[j] ? 2 : 1;
                
                for(var key : String in candi){
                    if(candi[key] == 1 && Number(key) <= 999966663333){
                        sum += Number(key);
                    }
                }
            }
        }

        private static function doEratosthenes(n : int) : Array
        {
            var ar : Vector.<uint> = new Vector.<uint>(n / 2 - 1);
            var i : int;
            for(i = 0;i < ar.length;i++)ar[i] = 1;
            
            var sq : int = (Math.sqrt(n) - 3) >> 1;
            for(var p : int = 0;p <= sq;p++){
                if(ar[p] == 1){
                    var m : int = (p << 1) + 3;
                    var m2 : int = m << 1;
                    for(var mm : int = m * m;mm <= n;mm += m2){
                        ar[(mm - 3) >> 1] = 0;
                    }
                }
            }
            var ret : Array = [2];
            for(i = 0;i < ar.length;i++){
                if(ar[i] == 1)ret.push((i << 1) + 3);
            }
            return ret;
        }
        
        private function t(o : *) : void
	{
            _tf.appendText("" + o + "\n");
	}
    }
}