Use bit masks for divisor heuristics

PerfectNumbers.Core/Gpu/GpuDivisorPartialData.cs

@@ -8,16 +8,16 @@ internal readonly struct GpuDivisorPartialData
     public readonly ReadOnlyGpuUInt128 ModulusWide;
 
     [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    private GpuDivisorPartialData(ulong modulus, in ReadOnlyGpuUInt128 modulusWide)
+    public GpuDivisorPartialData(ulong modulus)
+    {
+        Modulus = modulus;
+        ModulusWide = new ReadOnlyGpuUInt128(modulus);
+    }
+
+    [MethodImpl(MethodImplOptions.AggressiveInlining)]
+    public GpuDivisorPartialData(ulong modulus, in ReadOnlyGpuUInt128 modulusWide)
     {
         Modulus = modulus;
         ModulusWide = modulusWide;
     }
-
-    [MethodImpl(MethodImplOptions.AggressiveInlining)]
-    public static GpuDivisorPartialData Create(ulong modulus)
-    {
-        ReadOnlyGpuUInt128 modulusWide = new(modulus);
-        return new GpuDivisorPartialData(modulus, in modulusWide);
-    }
 }