Index: graphspell-js/ibdawg.js
==================================================================
--- graphspell-js/ibdawg.js
+++ graphspell-js/ibdawg.js
@@ -231,10 +231,13 @@
         if (sWord.includes("’")) { // ugly hack
             sWord = sWord.replace("’", "'");
         }
         if (this.lookup(sWord)) {
             return true;
+        }
+        if (sWord.gl_isDigit()) {
+            return true;
         }
         if (sWord.charAt(0).gl_isUpperCase()) {
             if (sWord.length > 1) {
                 if (sWord.gl_isTitle()) {
                     return !!this.lookup(sWord.toLowerCase());

Index: graphspell/ibdawg.py
==================================================================
--- graphspell/ibdawg.py
+++ graphspell/ibdawg.py
@@ -235,10 +235,12 @@
         if not sWord:
             return None
         if "’" in sWord: # ugly hack
             sWord = sWord.replace("’", "'")
         if self.lookup(sWord):
+            return True
+        if sWord.isdigit():
             return True
         if sWord[0:1].isupper():
             if len(sWord) > 1:
                 if sWord.istitle():
                     return self.lookup(sWord.lower())