The Crown Publishing Group said Wednesday that Bush's "Decision Points" passed the 2 million mark less than 2 months after its official release.
Published in early November, Bush's memoir about his key presidential decisions and other choices has topped the best-seller list on Amazon.com for weeks. More than 2.6 million hardcovers are in print after an initial run of 1.5 million.
The 2 million books sold include nearly 200,000 e-editions.
