No. of divisor cycle iterations made configurable

PerfectNumbers.Core/PerfectNumberConstants.cs

@@ -4,5 +4,7 @@ public static class PerfectNumberConstants
 {
 	public const ulong BiggestKnownEvenPerfectP = 136279841UL;
 	public static readonly uint PrimesLimit = 1_000_000; //(ulong)Array.MaxLength;// 1_000_000;
-    public const int MaxQForDivisorCycles = 4_000_000;
+	public const int MaxQForDivisorCycles = 4_000_000;
+	public const int ExtraDivisorCycleSearchLimit = 64;
+
 }