Pow2Mod kernel specific methods moved to Pow2MontgomeryKernels.

PerfectNumbers.Core/PerfectNumberConstants.cs

@@ -13,6 +13,7 @@ public static class PerfectNumberConstants
     public static readonly uint PrimesLimit = 1_000_000; //(ulong)Array.MaxLength;// 1_000_000;
     public const int MaxOddPowersCount = 128;
 	public const int PooledArrayThreshold = 64;
+	public const int Pow2WindowSize = 8;
 	public static readonly int RollingAccelerators = 298; //SharedGpuContext.Device.MaxNumThreadsPerGroup;
 	public const int ThreadsByAccelerator = 1;
     // TODO: Load these limits from the benchmark-driven configuration so CPU and GPU scans stay aligned with the optimal