mlemanczyk/even-perfect-numbers-scanner
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Refine heuristic prime tester integration

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Marek Lemańczyk committed 2025-10-26 18:15:27 +01:00
1 parent 21d645fcf0
commit 1e5eadac34
10 files changed
+186 -263
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PerfectNumbers.Core/MersenneDivisorCycles.cs
+5 -5
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@@ -394,9 +394,9 @@ public class MersenneDivisorCycles
return true;
}
// TODO: Benchmark PrimeTester.IsPrimeInternal against Open.Numeric.Primes on the EvenPerfectBitScanner workloads to confirm the faster option for wide composites.
// if (HeuristicPrimeTester.Exclusive.IsPrime(remaining, CancellationToken.None))
if (PrimeTester.IsPrimeInternal(remaining, CancellationToken.None))
// TODO: Benchmark PrimeTester.IsPrimeCp against Open.Numeric.Primes on the EvenPerfectBitScanner workloads to confirm the faster option for wide composites.
// if (HeuristicPrimeTester.Exclusive.IsPrimeCpu(remaining, CancellationToken.None))
if (PrimeTester.IsPrimeCp(remaining, CancellationToken.None))
{
AddFactor(counts, remaining);
return true;
@@ -928,8 +928,8 @@ public class MersenneDivisorCycles
return true;
}
// if (!skipPrimeOrderHeuristic && HeuristicPrimeTester.Exclusive.IsPrime(divisor, CancellationToken.None))
if (!skipPrimeOrderHeuristic && PrimeTester.IsPrimeInternal(divisor, CancellationToken.None))
// if (!skipPrimeOrderHeuristic && HeuristicPrimeTester.Exclusive.IsPrimeCpu(divisor, CancellationToken.None))
if (!skipPrimeOrderHeuristic && PrimeTester.IsPrimeCp(divisor, CancellationToken.None))
{
ulong computedOrder = PrimeOrderCalculator.Calculate(
divisor,