diff --git a/include/boost/unordered/detail/hash_table.hpp b/include/boost/unordered/detail/hash_table.hpp
index 2a7431ff..b6bd9aa6 100644
--- a/include/boost/unordered/detail/hash_table.hpp
+++ b/include/boost/unordered/detail/hash_table.hpp
@@ -35,6 +35,8 @@
 #include <boost/mpl/not.hpp>
 #include <boost/detail/workaround.hpp>
 #include <boost/utility/swap.hpp>
+#include <boost/preprocessor/seq/size.hpp>
+#include <boost/preprocessor/seq/enum.hpp>
 
 #include <boost/mpl/aux_/config/eti.hpp>
 
@@ -72,18 +74,25 @@ namespace boost {
             static std::ptrdiff_t const length;
         };
 
-        template<typename T>
-        std::size_t const prime_list_template<T>::value[] = {
-            5ul, 11ul, 17ul, 29ul, 37ul, 53ul, 67ul, 79ul,
-            97ul, 131ul, 193ul, 257ul, 389ul, 521ul, 769ul,
-            1031ul, 1543ul, 2053ul, 3079ul, 6151ul, 12289ul, 24593ul,
-            49157ul, 98317ul, 196613ul, 393241ul, 786433ul,
-            1572869ul, 3145739ul, 6291469ul, 12582917ul, 25165843ul,
-            50331653ul, 100663319ul, 201326611ul, 402653189ul, 805306457ul,
-            1610612741ul, 3221225473ul, 4294967291ul };
+#define BOOST_UNORDERED_PRIMES \
+        (5ul)(11ul)(17ul)(29ul)(37ul)(53ul)(67ul)(79ul) \
+        (97ul)(131ul)(193ul)(257ul)(389ul)(521ul)(769ul) \
+        (1031ul)(1543ul)(2053ul)(3079ul)(6151ul)(12289ul)(24593ul) \
+        (49157ul)(98317ul)(196613ul)(393241ul)(786433ul) \
+        (1572869ul)(3145739ul)(6291469ul)(12582917ul)(25165843ul) \
+        (50331653ul)(100663319ul)(201326611ul)(402653189ul)(805306457ul) \
+        (1610612741ul)(3221225473ul)(4294967291ul)
 
         template<typename T>
-        std::ptrdiff_t const prime_list_template<T>::length = 40;
+        std::size_t const prime_list_template<T>::value[] = {
+            BOOST_PP_SEQ_ENUM(BOOST_UNORDERED_PRIMES)
+        };
+
+        template<typename T>
+        std::ptrdiff_t const prime_list_template<T>::length
+            = BOOST_PP_SEQ_SIZE(BOOST_UNORDERED_PRIMES);
+
+#undef BOOST_UNORDERED_PRIMES
 
         typedef prime_list_template<std::size_t> prime_list;