> None of us can do it alone

Off topic but this is not technically true. 41 million digits means 1.3 years of saying one digit per second. Even taking 3x as long, to account for sleep and other activities, this would take about four years - still very much doable.

Four years times $100k/year plus $100k completion bonus equals $500k; I guess many people would be willing to do it alone under these conditions.