diff --git a/3/main.ua b/3/main.ua
new file mode 100644
index 0000000..a7f3997
--- /dev/null
+++ b/3/main.ua
@@ -0,0 +1,9 @@
+# project euler 3
+
+# doesn't work in the online pad because number
+# is too large.
+/↥°/×600851475143
+
+┌─╴Test
+  ⍤⤙≍°/× 13195 [5 7 13 29]
+└─╴