diff --git a/NumberOfFactors.java b/NumberSystem/NumberOfFactors.java
similarity index 93%
rename from NumberOfFactors.java
rename to NumberSystem/NumberOfFactors.java
index 21bde2729fc7d54301a96b68eabea438b13d79c2..131daa2aac3358bb834a7e89e052a2e2e04214b7 100644
--- a/NumberOfFactors.java
+++ b/NumberSystem/NumberOfFactors.java
@@ -1,3 +1,5 @@
+package NumberSystem;
+
 public class NumberOfFactors {
     static int countFactors(int N) {
         double sqrt=(double) (Math.sqrt(N));
diff --git a/NumberSystem/PrimeNumbersBoolean.java b/NumberSystem/PrimeNumbersBoolean.java
new file mode 100644
index 0000000000000000000000000000000000000000..7c6dd05e02df7dd720012522e0f9d81bb9c3dc7e
--- /dev/null
+++ b/NumberSystem/PrimeNumbersBoolean.java
@@ -0,0 +1,12 @@
+package NumberSystem;
+
+public class PrimeNumbersBoolean {
+    static boolean isPrime(int n) {
+        for(int i=2;i<n;i++){
+            if(n%i==0)
+                return false;
+        }
+        return true;
+
+    }
+}