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diff --git a/examples/factors-of-n.dsl b/examples/factors-of-n.dsl
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+''' recursively pushes the prime factors of the int on the top of the stack'''
+PROC factors
+  ''' only proceed if the input is valid '''
+  IF DUP 1 < DO
+    ''' find the smallest number that divides n '''
+    2 WHILE OVER OVER SWAP % 0 != DO 1 + END
+    ''' print it and find the next factor '''
+    DUP .
+    OVER OVER SWAP / factors
+  END
+END
+
+PROC MAIN
+  "Prime factors of 12:" . 12 factors
+  "Prime factors of 5:"  . 5  factors
+  "Prime factors of 60:" . 60 factors
+  "Prime factors of 97:" . 97 factors
+END
+