Added test for isPrime function

Algorithms.ts

@@ -327,7 +327,7 @@ export function isPrime(possiblePrime: number): boolean{
 	else if(((possiblePrime % 2) == 0) || ((possiblePrime % 3) == 0)){
 		return false;
 	}
-	for(let cnt: number = 5;(cnt * cnt) <= possiblePrime; cnt += 6){
+	for(let cnt: number = 5;(cnt * cnt) <= possiblePrime;cnt += 6){
 		if(((possiblePrime % cnt) == 0) || ((possiblePrime % (cnt + 2)) == 0)){
 			return false;
 		}