diff --git a/example/Count.hs b/example/Count.hs
new file mode 100644
--- /dev/null
+++ b/example/Count.hs
@@ -0,0 +1,23 @@
+import Foundation
+
+import Math.Prime.FastSieve
+
+-- Test the results of prime count.
+
+testEq :: (Eq a, Show a) => String -> a -> a -> IO ()
+testEq message a b = do
+    putStr $ message <> show a
+    if a /= b
+        then putStrLn $ ", but should be: " <> show b
+        else putStrLn ""
+
+main :: IO ()
+main = do
+    putStrLn "Test count of prime numbers"
+
+    testEq "count within 10^8: " (countPrimes 0 100000000) 5761455
+    testEq "count within 10^9: " (countPrimes 0 1000000000) 50847534
+    testEq "count within 2^32: " (countPrimes 0 4294967296) 203280221
+    testEq "count within 10^10: " (countPrimes 0 10000000000) 455052511
+    testEq "count within 10^11: " (countPrimes 0 100000000000) 4118054813
+
diff --git a/primesieve.cabal b/primesieve.cabal
--- a/primesieve.cabal
+++ b/primesieve.cabal
@@ -1,11 +1,11 @@
 name:                primesieve
-version:             0.1.0.0
+version:             0.1.0.1
 synopsis:            FFI bindings for the primesieve library.
 description:         FFI bindings for the primesieve library.
 homepage:            https://github.com/sighingnow/computations/tree/master/primesieve#readme
-author:              Tao He
+author:              HE, Tao
 maintainer:          sighingnow@gmail.com
-copyright:           Copyright: (c) 2017 Tao He
+copyright:           Copyright: (c) 2017 HE, Tao
 category:            Algorithms, Foreign, Math, Number Theory
 build-type:          Simple
 cabal-version:       >=1.10
@@ -24,6 +24,17 @@
                      , OverloadedStrings
   build-depends:       base >= 4.7 && < 5
                      , foundation
+
+executable prime-count
+  hs-source-dirs:      example
+  main-is:             Count.hs
+  default-language:    Haskell2010
+  default-extensions:  NoImplicitPrelude
+                     , OverloadedStrings
+  build-depends:       base >= 4.7 && < 5
+                     , foundation
+                     , primesieve
+  extra-libraries:     primesieve
 
 executable prime-example
   hs-source-dirs:      example