using System.Numerics;

namespace PerfectNumbers.Core
{
    public static class Pow2Provider
    {
		public static BigInteger BigInteger(int i) => i switch
		{
			0 => System.Numerics.BigInteger.One,
			1 => BigIntegerNumbers.Two,
			2 => BigIntegerNumbers.Pow2Exact2,
			3 => BigIntegerNumbers.Pow2Exact3,
			4 => BigIntegerNumbers.Pow2Exact4,
			5 => BigIntegerNumbers.Pow2Exact5,
			6 => BigIntegerNumbers.Pow2Exact6,
			7 => BigIntegerNumbers.Pow2Exact7,
			8 => BigIntegerNumbers.Pow2Exact8,
			9 => BigIntegerNumbers.Pow2Exact9,
			10 => BigIntegerNumbers.Pow2Exact10,
			11 => BigIntegerNumbers.Pow2Exact11,
			12 => BigIntegerNumbers.Pow2Exact12,
			13 => BigIntegerNumbers.Pow2Exact13,
			14 => BigIntegerNumbers.Pow2Exact14,
			15 => BigIntegerNumbers.Pow2Exact15,
			16 => BigIntegerNumbers.Pow2Exact16,
			17 => BigIntegerNumbers.Pow2Exact17,
			18 => BigIntegerNumbers.Pow2Exact18,
			19 => BigIntegerNumbers.Pow2Exact19,
			20 => BigIntegerNumbers.Pow2Exact20,
			21 => BigIntegerNumbers.Pow2Exact21,
			22 => BigIntegerNumbers.Pow2Exact22,
			23 => BigIntegerNumbers.Pow2Exact23,
			24 => BigIntegerNumbers.Pow2Exact24,
			25 => BigIntegerNumbers.Pow2Exact25,
			26 => BigIntegerNumbers.Pow2Exact26,
			27 => BigIntegerNumbers.Pow2Exact27,
			28 => BigIntegerNumbers.Pow2Exact28,
			29 => BigIntegerNumbers.Pow2Exact29,
			30 => BigIntegerNumbers.Pow2Exact30,
			31 => BigIntegerNumbers.Pow2Exact31,
			32 => BigIntegerNumbers.Pow2Exact32,
			33 => BigIntegerNumbers.Pow2Exact33,
			34 => BigIntegerNumbers.Pow2Exact34,
			35 => BigIntegerNumbers.Pow2Exact35,
			36 => BigIntegerNumbers.Pow2Exact36,
			37 => BigIntegerNumbers.Pow2Exact37,
			38 => BigIntegerNumbers.Pow2Exact38,
			39 => BigIntegerNumbers.Pow2Exact39,
			40 => BigIntegerNumbers.Pow2Exact40,
			41 => BigIntegerNumbers.Pow2Exact41,
			42 => BigIntegerNumbers.Pow2Exact42,
			43 => BigIntegerNumbers.Pow2Exact43,
			44 => BigIntegerNumbers.Pow2Exact44,
			45 => BigIntegerNumbers.Pow2Exact45,
			46 => BigIntegerNumbers.Pow2Exact46,
			47 => BigIntegerNumbers.Pow2Exact47,
			48 => BigIntegerNumbers.Pow2Exact48,
			49 => BigIntegerNumbers.Pow2Exact49,
			50 => BigIntegerNumbers.Pow2Exact50,
			51 => BigIntegerNumbers.Pow2Exact51,
			52 => BigIntegerNumbers.Pow2Exact52,
			53 => BigIntegerNumbers.Pow2Exact53,
			54 => BigIntegerNumbers.Pow2Exact54,
			55 => BigIntegerNumbers.Pow2Exact55,
			56 => BigIntegerNumbers.Pow2Exact56,
			57 => BigIntegerNumbers.Pow2Exact57,
			58 => BigIntegerNumbers.Pow2Exact58,
			59 => BigIntegerNumbers.Pow2Exact59,
			60 => BigIntegerNumbers.Pow2Exact60,
			61 => BigIntegerNumbers.Pow2Exact61,
			62 => BigIntegerNumbers.Pow2Exact62,
			63 => BigIntegerNumbers.Pow2Exact63,
			_ => throw new ArgumentOutOfRangeException(nameof(i), $"Parameter value {i} is incorrect"),
		};

		public static BigInteger BigIntegerMinusOne(int i) => i switch
		{
			0 => System.Numerics.BigInteger.Zero,
			1 => BigIntegerNumbers.Pow2MinusOne1,
			2 => BigIntegerNumbers.Pow2MinusOne2,
			3 => BigIntegerNumbers.Pow2MinusOne3,
			4 => BigIntegerNumbers.Pow2MinusOne4,
			5 => BigIntegerNumbers.Pow2MinusOne5,
			6 => BigIntegerNumbers.Pow2MinusOne6,
			7 => BigIntegerNumbers.Pow2MinusOne7,
			8 => BigIntegerNumbers.Pow2MinusOne8,
			9 => BigIntegerNumbers.Pow2MinusOne9,
			10 => BigIntegerNumbers.Pow2MinusOne10,
			11 => BigIntegerNumbers.Pow2MinusOne11,
			12 => BigIntegerNumbers.Pow2MinusOne12,
			13 => BigIntegerNumbers.Pow2MinusOne13,
			14 => BigIntegerNumbers.Pow2MinusOne14,
			15 => BigIntegerNumbers.Pow2MinusOne15,
			16 => BigIntegerNumbers.Pow2MinusOne16,
			17 => BigIntegerNumbers.Pow2MinusOne17,
			18 => BigIntegerNumbers.Pow2MinusOne18,
			19 => BigIntegerNumbers.Pow2MinusOne19,
			20 => BigIntegerNumbers.Pow2MinusOne20,
			21 => BigIntegerNumbers.Pow2MinusOne21,
			22 => BigIntegerNumbers.Pow2MinusOne22,
			23 => BigIntegerNumbers.Pow2MinusOne23,
			24 => BigIntegerNumbers.Pow2MinusOne24,
			25 => BigIntegerNumbers.Pow2MinusOne25,
			26 => BigIntegerNumbers.Pow2MinusOne26,
			27 => BigIntegerNumbers.Pow2MinusOne27,
			28 => BigIntegerNumbers.Pow2MinusOne28,
			29 => BigIntegerNumbers.Pow2MinusOne29,
			30 => BigIntegerNumbers.Pow2MinusOne30,
			31 => BigIntegerNumbers.Pow2MinusOne31,
			32 => BigIntegerNumbers.Pow2MinusOne32,
			33 => BigIntegerNumbers.Pow2MinusOne33,
			34 => BigIntegerNumbers.Pow2MinusOne34,
			35 => BigIntegerNumbers.Pow2MinusOne35,
			36 => BigIntegerNumbers.Pow2MinusOne36,
			37 => BigIntegerNumbers.Pow2MinusOne37,
			38 => BigIntegerNumbers.Pow2MinusOne38,
			39 => BigIntegerNumbers.Pow2MinusOne39,
			40 => BigIntegerNumbers.Pow2MinusOne40,
			41 => BigIntegerNumbers.Pow2MinusOne41,
			42 => BigIntegerNumbers.Pow2MinusOne42,
			43 => BigIntegerNumbers.Pow2MinusOne43,
			44 => BigIntegerNumbers.Pow2MinusOne44,
			45 => BigIntegerNumbers.Pow2MinusOne45,
			46 => BigIntegerNumbers.Pow2MinusOne46,
			47 => BigIntegerNumbers.Pow2MinusOne47,
			48 => BigIntegerNumbers.Pow2MinusOne48,
			49 => BigIntegerNumbers.Pow2MinusOne49,
			50 => BigIntegerNumbers.Pow2MinusOne50,
			51 => BigIntegerNumbers.Pow2MinusOne51,
			52 => BigIntegerNumbers.Pow2MinusOne52,
			53 => BigIntegerNumbers.Pow2MinusOne53,
			54 => BigIntegerNumbers.Pow2MinusOne54,
			55 => BigIntegerNumbers.Pow2MinusOne55,
			56 => BigIntegerNumbers.Pow2MinusOne56,
			57 => BigIntegerNumbers.Pow2MinusOne57,
			58 => BigIntegerNumbers.Pow2MinusOne58,
			59 => BigIntegerNumbers.Pow2MinusOne59,
			60 => BigIntegerNumbers.Pow2MinusOne60,
			61 => BigIntegerNumbers.Pow2MinusOne61,
			62 => BigIntegerNumbers.Pow2MinusOne62,
			63 => BigIntegerNumbers.Pow2MinusOne63,
			1024 => BigIntegerNumbers.Pow2MinusOne1024,
			_ => throw new ArgumentOutOfRangeException(nameof(i), $"Parameter value {i} is incorrect"),
		};
    }
}