From 155545384824c6a0182100a8f41562cd21473733 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Marek=20Lema=C5=84czyk?= <marek@lemanczyk.eu>
Date: Sat, 20 Sep 2025 04:52:03 +0200
Subject: [PATCH] Prevent premature stop when filtering primes

---
 EvenPerfectBitScanner/Program.cs | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/EvenPerfectBitScanner/Program.cs b/EvenPerfectBitScanner/Program.cs
index 8896a26..ae7fc18 100644
--- a/EvenPerfectBitScanner/Program.cs
+++ b/EvenPerfectBitScanner/Program.cs
@@ -643,9 +643,17 @@ internal static class Program
 					}
 					else
 					{
-						for (j = 0; j < count && !Volatile.Read(ref _limitReached); j++)
+						bool reachedMax = false;
+
+						for (j = 0; j < count; j++)
 						{
 							p = buffer[j];
+
+							if (Volatile.Read(ref _limitReached) && p > maxP)
+							{
+								break;
+							}
+
 							if (useFilter && !filter.Contains(p))
 							{
 								continue;
@@ -653,12 +661,18 @@ internal static class Program
 
 							passedAllTests = IsEvenPerfectCandidate(p, divisorCyclesSearchLimit, out searchedMersenne, out detailedCheck);
 							PrintResult(p, searchedMersenne, detailedCheck, passedAllTests);
+
 							if (p == maxP)
 							{
-								Volatile.Write(ref _limitReached, true);
-								break;
+								reachedMax = true;
 							}
 						}
+
+						if (reachedMax)
+						{
+							Volatile.Write(ref _limitReached, true);
+							break;
+						}
 					}
 				}
 			});