diff --git a/allalgorithms/numeric/isPrime.py b/allalgorithms/numeric/isPrime.py
new file mode 100644
index 0000000..be69e9c
--- /dev/null
+++ b/allalgorithms/numeric/isPrime.py
@@ -0,0 +1,26 @@
+# -*- coding: UTF-8 -*-
+#
+# Check if is prime
+# The All ▲lgorithms library for python
+#
+# Contributed by: Natan Lucena
+# Github: @NatanLucena
+#
+
+def isPrime(n) : 
+  
+    if (n <= 1) : 
+        return False
+    if (n <= 3) : 
+        return True
+  
+    if (n % 2 == 0 or n % 3 == 0) : 
+        return False
+  
+    i = 5
+    while(i * i <= n) : 
+        if (n % i == 0 or n % (i + 2) == 0) : 
+            return False
+        i = i + 6
+  
+    return True