Reapply "Merge pull request #34 from mlemanczyk/codex/fix-residue-method-iteration-issue"

This reverts commit 9a199dc258.

PerfectNumbers.Core.Tests/MersenneNumberTester/MersenneResidueModeTests.cs

@@ -19,5 +19,12 @@ public class MersenneResidueModeTests
         var tester = new MersenneNumberTester(useResidue: true, useIncremental: true, maxK: 1_000UL);
         tester.IsMersennePrime(31UL).Should().BeTrue();
     }
+
+    [Fact]
+    public void IsMersennePrime_residue_mode_accepts_prime_exponent_when_scanning_multiple_batches()
+    {
+        var tester = new MersenneNumberTester(useResidue: true, useIncremental: true, maxK: 2_100_000UL);
+        tester.IsMersennePrime(31UL).Should().BeTrue();
+    }
 }