Got a twenty today with the serial number 11007877 if the 8 was a 7 it could have had additional premium
1+1+0+0+7+8+7+7 is equal to 31, but 1+1+0+0+7+7+7+7 is equal to 30. 30 is more desirable than 31, right? That's all I can think of.
Trinary is not a thing. Despite You Tube videos. Check some of these: http://coolserialnumbers.com/FancySerialNumbers.aspx