6 ans

C'est marrant, les précédentes découvertes étaient plus régulières :

Previous GIMPS Mersenne prime discoveries were made by members in various countries.
In December 2018, Patrick Laroche et al. discovered the 51st known Mersenne prime in the U.S.
In December 2017, Jonathan Pace et al. discovered the 50th known Mersenne prime in the U.S.
In January 2016, Curtis Cooper et al. discovered the 49th known Mersenne prime in the U.S.
In January 2013, Curtis Cooper et al. discovered the 48th Mersenne prime in the U.S.
In April 2009, Odd Magnar Strindmo et al. discovered the 46th Mersenne (47th known) prime in Norway.
In September 2008, Hans-Michael Elvenich et al. discovered the 45th Mersenne (46th known) prime in Germany.