Most device buffers integrated into PrimeOrderCalculatorAccelerator. PrimeOrderCalculator switched to partial factoring on GPU.

PerfectNumbers.Core/MersenneDivisorCycles.cs

@@ -415,8 +415,9 @@ public class MersenneDivisorCycles
 		// Console.WriteLine($"MersenneDivisorCycles.TryFactorIntoCountsInternal hits {Volatile.Read(ref _tryFactorIntoCountsInternalHits)}");
 
 		// HeuristicPrimeTester primeTester = _primeTester ??= new();
+		if (HeuristicCombinedPrimeTester.IsPrimeCpu(remaining))
 		// if (HeuristicCombinedPrimeTester.IsPrimeGpu(gpu, remaining))
-		if (PrimeTester.IsPrime(remaining))
+		// if (PrimeTester.IsPrime(remaining))
 		{
 			AddFactor(counts, remaining);
 			return true;
@@ -965,7 +966,7 @@ public class MersenneDivisorCycles
 
 		// HeuristicPrimeTester primeTester = _primeTester ??= new();
 		// if (!skipPrimeOrderHeuristic && HeuristicPrimeTester.Exclusive.IsPrimeCpu(divisor, CancellationToken.None))
-		if (!skipPrimeOrderHeuristic && PrimeTester.IsPrime(divisor))
+		if (!skipPrimeOrderHeuristic && HeuristicCombinedPrimeTester.IsPrimeCpu(divisor))
 		// if (!skipPrimeOrderHeuristic && HeuristicCombinedPrimeTester.IsPrimeGpu(divisor))
 		{
 			ulong computedOrder = PrimeOrderCalculator.Calculate(