using System;

//github.com/MessagePack-CSharp/MessagePack-CSharp
using MessagePack;

var arr = new[] { 2, 3, 5, 7, 11 };

//Encoding Binary Data
var data_b = MessagePackSerializer.Serialize(arr);

//Decoding Binary Data
var arr2 = MessagePackSerializer.Deserialize<int[]>(data_b);

Console.WriteLine($"arr2.Length is {arr2.Length}");