From be7c2b7ae543d8f3b059c71f657364896170ea98 Mon Sep 17 00:00:00 2001
From: mlemanczyk <marek@lemanczyk.eu>
Date: Fri, 17 Oct 2025 16:41:15 +0200
Subject: [PATCH] Tiny optimization

---
 PerfectNumbers.Core/PrimeOrderCalculator.Cpu.cs | 7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

diff --git a/PerfectNumbers.Core/PrimeOrderCalculator.Cpu.cs b/PerfectNumbers.Core/PrimeOrderCalculator.Cpu.cs
index bae7f92..a34b206 100644
--- a/PerfectNumbers.Core/PrimeOrderCalculator.Cpu.cs
+++ b/PerfectNumbers.Core/PrimeOrderCalculator.Cpu.cs
@@ -687,13 +687,12 @@ internal static partial class PrimeOrderCalculator
 
 	private static bool GetOrComputePrimality(ulong value)
 	{
-		if (TryGetCachedPrimality(value, out bool isPrime))
+		if (!TryGetCachedPrimality(value, out bool isPrime))
 		{
-			return isPrime;
+			isPrime = Open.Numeric.Primes.Prime.Numbers.IsPrime(value);
+			CachePrimalityResult(value, isPrime);
 		}
 
-		isPrime = Open.Numeric.Primes.Prime.Numbers.IsPrime(value);
-		CachePrimalityResult(value, isPrime);
 		return isPrime;
 	}