From 5ba61146e60db14de263e0d9f88463375a37a6e0 Mon Sep 17 00:00:00 2001
From: terrafrost <terrafrost@php.net>
Date: Wed, 22 Nov 2017 19:49:55 -0600
Subject: [PATCH] BigInteger: adjustment to isPrime

---
 phpseclib/Math/BigInteger.php | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/phpseclib/Math/BigInteger.php b/phpseclib/Math/BigInteger.php
index 6f9d5915..e2a219c7 100644
--- a/phpseclib/Math/BigInteger.php
+++ b/phpseclib/Math/BigInteger.php
@@ -3492,7 +3492,7 @@ class Math_BigInteger
                     break;
                 }
             }
-            $s = 26 * $i + $j - 1;
+            $s = 26 * $i + $j;
             $r->_rshift($s);
         }