diff --git a/README.md b/README.md
index e9a590b..bf0c375 100644
--- a/README.md
+++ b/README.md
@@ -111,3 +111,6 @@ CFcSBwgCCBoHRhkKU1cGAA4AGU5YQR5THBwNFwoGGAxTQQMQVBUSBg4EAAwQRhUQVBUHFAQTGRpT QQM
 
 ### i-love-lance-janice
 * Completed in: 34 mins, 26 secs.
+
+### re-id
+* Completed in: 10 mins, 19 secs.
diff --git a/extra/re-id/solution.py b/extra/re-id/solution.py
new file mode 100644
index 0000000..56bd7c5
--- /dev/null
+++ b/extra/re-id/solution.py
@@ -0,0 +1,31 @@
+def solution(i):
+    result = ""
+    count = 0
+    for n in generate_prime():
+        result += str(n)
+        if len(result) >= i + 5:
+            return result[i:i+5]
+
+def generate_prime():
+    num = 2
+    primes = []
+    while True:
+        is_prime = True
+        for p in primes:
+            if num % p == 0:
+                is_prime = False
+                break
+        if is_prime:
+            yield num
+            primes += [num]
+        num += 1
+
+tests = [
+        (0, "23571"),
+        (1, "35711"),
+        (3, "71113"),
+        ]
+
+for i, o in tests:
+    result = solution(i)
+    print (i, result == o, result, o)