BsonDocument.Parse("{ \"val\": -99999996802856924650656260769173209088 }");

'BsonDocument.Parse("{ \"val\": -99999996802856924650656260769173209088 }")' threw an exception of type 'System.OverflowException'
    Data: {System.Collections.ListDictionaryInternal}
    HResult: -2146233066
    HelpLink: null
    InnerException: null
    Message: "Value was either too large or too small for an Int64."
    Source: "mscorlib"
    StackTrace: "   at System.Number.ParseInt64(String value, NumberStyles options, NumberFormatInfo numfmt)\r\n   at MongoDB.Bson.IO.JsonScanner.GetNumberToken(JsonBuffer buffer, Int32 firstChar)\r\n   at MongoDB.Bson.IO.JsonScanner.GetNextToken(JsonBuffer buffer)\r\n   at MongoDB.Bson.IO.JsonReader.PopToken()\r\n   at MongoDB.Bson.IO.JsonReader.ReadBsonType()\r\n   at MongoDB.Bson.Serialization.Serializers.BsonDocumentSerializer.DeserializeValue(BsonDeserializationContext context, BsonDeserializationArgs args)\r\n   at MongoDB.Bson.Serialization.Serializers.BsonValueSerializerBase`1.Deserialize(BsonDeserializationContext context, BsonDeserializationArgs args)\r\n   at MongoDB.Bson.Serialization.IBsonSerializerExtensions.Deserialize[TValue](IBsonSerializer`1 serializer, BsonDeserializationContext context)\r\n   at MongoDB.Bson.BsonDocument.Parse(String json)"
    TargetSite: {Int64 ParseInt64(System.String, System.Globalization.NumberStyles, System.Globalization.NumberFormatInfo)}

Newtonsoft.Json.Linq.JObject.Parse("{ \"val\": -99999996802856924650656260769173209088 }");