diff -r 2e19b392d9e3 -r 18750e86d5b8 src/HOL/Number_Theory/Primes.thy
--- a/src/HOL/Number_Theory/Primes.thy	Sun Nov 09 10:03:17 2014 +0100
+++ b/src/HOL/Number_Theory/Primes.thy	Sun Nov 09 10:03:18 2014 +0100
@@ -154,7 +154,7 @@
 
 text{* A bit of regression testing: *}
 
-lemma "prime(7::nat)" by simp
+lemma "prime(97::nat)" by simp
 lemma "prime(997::nat)" by eval