Small primes array type changed to uint[] to avoid excessive memory use, especially on GPU

PerfectNumbers.Core/PerfectNumberConstants.cs

@@ -3,7 +3,7 @@ namespace PerfectNumbers.Core;
 public static class PerfectNumberConstants
 {
 	public const ulong BiggestKnownEvenPerfectP = 136279841UL;
-	public static readonly ulong PrimesLimit = 1_000_000; //(ulong)Array.MaxLength;// 1_000_000;
+	public static readonly uint PrimesLimit = 1_000_000; //(ulong)Array.MaxLength;// 1_000_000;
 
 	// Maximum K for residue-based Mersenne test (q = 2*p*k + 1 up to this k)
 	public static readonly UInt128 ResidueMaxK = 5_000_000UL;