diff --git a/three/three.py b/three/three.py
new file mode 100644
index 0000000..8871498
--- /dev/null
+++ b/three/three.py
@@ -0,0 +1,18 @@
+def isprime(n):
+	n = abs(int(n))
+	if n == 2:
+		return True
+	if not n & 1:
+		return False
+	for x in range(3, int(n**0.5+1), 2):
+		if n % x == 0:
+			return False
+	return True
+
+n = 600851475143
+
+for x in range(3, int(n**0.5+1), 2):
+	if n % x == 0:
+		if isprime(x) is True:
+			print x
+