MontgomeryDivisorData converted to a pooled class to limit GC pressure. MontgomeryDivisorDataGpu added for GPU operations. PrimeOrderCalculator kernels precompiled during warmup.

EvenPerfectBitScanner.Benchmarks/Pow2MontgomeryModBenchmarks.cs

@@ -37,7 +37,7 @@ public class Pow2MontgomeryModBenchmarks
             ulong smallModulus = NextSmallOddModulus();
             _smallDivisors[i] = CreateMontgomeryDivisorData(smallModulus);
             _smallExponents[i] = NextSmallExponent();
-            _smallCycles[i] = MersenneDivisorCycles.CalculateCycleLength(smallModulus, MontgomeryDivisorData.FromModulus(smallModulus));
+            _smallCycles[i] = MersenneDivisorCycles.CalculateCycleLength(smallModulus, MontgomeryDivisorDataPool.Shared.FromModulus(smallModulus));
 
 				Console.WriteLine($"Calculating large cycle {i + 1} with heuristics");
             (ulong largeModulus, ulong largeCycle) = NextLargeModulusAndCycle();