diff --git a/EvenPerfectBitScanner/CalculationResultHandler.cs b/EvenPerfectBitScanner/CalculationResultHandler.cs
index 3fd8515..eb7dcca 100644
--- a/EvenPerfectBitScanner/CalculationResultHandler.cs
+++ b/EvenPerfectBitScanner/CalculationResultHandler.cs
@@ -1,4 +1,3 @@
-using System;
 using System.Buffers.Text;
 using System.Globalization;
 using System.Numerics;
diff --git a/EvenPerfectBitScanner/Program.cs b/EvenPerfectBitScanner/Program.cs
index 0e95a9c..7df4c28 100644
--- a/EvenPerfectBitScanner/Program.cs
+++ b/EvenPerfectBitScanner/Program.cs
@@ -1,7 +1,5 @@
 using System.Buffers;
 using System.Diagnostics;
-using System.Globalization;
-using System.Numerics;
 using System.Runtime.CompilerServices;
 using EvenPerfectBitScanner.Candidates;
 using EvenPerfectBitScanner.IO;
diff --git a/PerfectNumbers.Core.Tests/MersenneNumberResidueCpuTesterTests.cs b/PerfectNumbers.Core.Tests/MersenneNumberResidueCpuTesterTests.cs
index 9e02706..c07ce17 100644
--- a/PerfectNumbers.Core.Tests/MersenneNumberResidueCpuTesterTests.cs
+++ b/PerfectNumbers.Core.Tests/MersenneNumberResidueCpuTesterTests.cs
@@ -1,6 +1,5 @@
 using FluentAssertions;
 using PerfectNumbers.Core.Cpu;
-using PerfectNumbers.Core.Gpu.Accelerators;
 using Xunit;
 using UInt128 = System.UInt128;
 
diff --git a/PerfectNumbers.Core.Tests/PollingSemaphoreTests.cs b/PerfectNumbers.Core.Tests/PollingSemaphoreTests.cs
index bf599d2..53731cc 100644
--- a/PerfectNumbers.Core.Tests/PollingSemaphoreTests.cs
+++ b/PerfectNumbers.Core.Tests/PollingSemaphoreTests.cs
@@ -1,5 +1,4 @@
 using FluentAssertions;
-using PerfectNumbers.Core;
 using Xunit;
 
 namespace PerfectNumbers.Core.Tests;
diff --git a/PerfectNumbers.Core/Cpu/MersenneNumberDivisorByDivisorCpuTester.cs b/PerfectNumbers.Core/Cpu/MersenneNumberDivisorByDivisorCpuTester.cs
index 5d80c20..38a1ec6 100644
--- a/PerfectNumbers.Core/Cpu/MersenneNumberDivisorByDivisorCpuTester.cs
+++ b/PerfectNumbers.Core/Cpu/MersenneNumberDivisorByDivisorCpuTester.cs
@@ -1,8 +1,6 @@
 using System.Numerics;
 using System.Runtime.CompilerServices;
 using System.Globalization;
-using System.IO;
-using PerfectNumbers.Core;
 using PerfectNumbers.Core.Gpu;
 using PerfectNumbers.Core.Gpu.Accelerators;
 
diff --git a/PerfectNumbers.Core/Cpu/MersenneNumberResidueCpuTester.cs b/PerfectNumbers.Core/Cpu/MersenneNumberResidueCpuTester.cs
index 7529d62..a012cf1 100644
--- a/PerfectNumbers.Core/Cpu/MersenneNumberResidueCpuTester.cs
+++ b/PerfectNumbers.Core/Cpu/MersenneNumberResidueCpuTester.cs
@@ -1,5 +1,3 @@
-using PerfectNumbers.Core.Gpu.Accelerators;
-
 namespace PerfectNumbers.Core.Cpu;
 
 public class MersenneNumberResidueCpuTester
diff --git a/PerfectNumbers.Core/Gpu/AcceleratorPool.cs b/PerfectNumbers.Core/Gpu/AcceleratorPool.cs
index 6dcbace..81828b4 100644
--- a/PerfectNumbers.Core/Gpu/AcceleratorPool.cs
+++ b/PerfectNumbers.Core/Gpu/AcceleratorPool.cs
@@ -1,6 +1,5 @@
 using ILGPU;
 using ILGPU.Runtime;
-using Open.Collections;
 
 namespace PerfectNumbers.Core.Gpu
 {
diff --git a/PerfectNumbers.Core/Gpu/GpuPrimeWorkLimiter.cs b/PerfectNumbers.Core/Gpu/GpuPrimeWorkLimiter.cs
index cf154e5..2b294bd 100644
--- a/PerfectNumbers.Core/Gpu/GpuPrimeWorkLimiter.cs
+++ b/PerfectNumbers.Core/Gpu/GpuPrimeWorkLimiter.cs
@@ -1,5 +1,3 @@
-using PerfectNumbers.Core;
-
 namespace PerfectNumbers.Core.Gpu;
 
 public static class GpuPrimeWorkLimiter
diff --git a/PerfectNumbers.Core/Gpu/Kernels/PrimeOrderSpecialMaxKernels.cs b/PerfectNumbers.Core/Gpu/Kernels/PrimeOrderSpecialMaxKernels.cs
index 0e08f1b..1d3c828 100644
--- a/PerfectNumbers.Core/Gpu/Kernels/PrimeOrderSpecialMaxKernels.cs
+++ b/PerfectNumbers.Core/Gpu/Kernels/PrimeOrderSpecialMaxKernels.cs
@@ -1,5 +1,4 @@
 using ILGPU;
-using ILGPU.Runtime;
 
 namespace PerfectNumbers.Core.Gpu;
 
diff --git a/PerfectNumbers.Core/Gpu/MersenneNumberDivisorByDivisorGpuTester.cs b/PerfectNumbers.Core/Gpu/MersenneNumberDivisorByDivisorGpuTester.cs
index 5362d5a..db721db 100644
--- a/PerfectNumbers.Core/Gpu/MersenneNumberDivisorByDivisorGpuTester.cs
+++ b/PerfectNumbers.Core/Gpu/MersenneNumberDivisorByDivisorGpuTester.cs
@@ -1,11 +1,9 @@
-using System;
 using System.Collections.Concurrent;
 using System.Numerics;
 using System.Runtime.CompilerServices;
 using System.Runtime.InteropServices;
 using ILGPU;
 using ILGPU.Runtime;
-using PerfectNumbers.Core;
 using PerfectNumbers.Core.Gpu.Accelerators;
 
 namespace PerfectNumbers.Core.Gpu;
diff --git a/PerfectNumbers.Core/Gpu/Pow2MontgomeryGpuCalculator.cs b/PerfectNumbers.Core/Gpu/Pow2MontgomeryGpuCalculator.cs
index 4cae83f..80eaa0c 100644
--- a/PerfectNumbers.Core/Gpu/Pow2MontgomeryGpuCalculator.cs
+++ b/PerfectNumbers.Core/Gpu/Pow2MontgomeryGpuCalculator.cs
@@ -1,5 +1,4 @@
 using System.Runtime.CompilerServices;
-using ILGPU;
 using ILGPU.Runtime;
 using PerfectNumbers.Core.Gpu.Accelerators;
 
diff --git a/PerfectNumbers.Core/PrimeOrderCalculator.Shared.cs b/PerfectNumbers.Core/PrimeOrderCalculator.Shared.cs
index 2c262fd..3681aec 100644
--- a/PerfectNumbers.Core/PrimeOrderCalculator.Shared.cs
+++ b/PerfectNumbers.Core/PrimeOrderCalculator.Shared.cs
@@ -1,8 +1,6 @@
 using System.Buffers;
 using System.Diagnostics;
 using System.Numerics;
-using PerfectNumbers.Core.Gpu;
-using PerfectNumbers.Core.Gpu.Accelerators;
 
 namespace PerfectNumbers.Core;
 
diff --git a/PerfectNumbers.Core/ULongExtensions.Gpu.cs b/PerfectNumbers.Core/ULongExtensions.Gpu.cs
index 91323fb..dacd812 100644
--- a/PerfectNumbers.Core/ULongExtensions.Gpu.cs
+++ b/PerfectNumbers.Core/ULongExtensions.Gpu.cs
@@ -1,5 +1,4 @@
 using System.Runtime.CompilerServices;
-using ILGPU.Algorithms;
 using PerfectNumbers.Core.Gpu;
 using PerfectNumbers.Core.Gpu.Accelerators;