Books like Factoring Humanity
Robert J. Sawyer
Factoring Humanity is 336 pages, about 6 hours 10 minutes at 250 words a minute.
10 books to read next
How long each takes
Contact 7.9 h 
In the Skin of a Lion 4.5 h 
Kill Decision 8.3 h 
Agency 7.6 h 
Berserker 5.7 h 
Blood Price 5.0 h 
The Medusa Chronicles 7.6 h 
The Best Book Ever 6.4 h 
The Kraken Project 3.3 h 
Blood Trail 5.6 h Bar height shows length. Estimated at 250 words a minute.