Archive for the Great Internet Mersenne Prime Search

odd prime numbers

Posted in Books with tags , , , , on February 9, 2013 by xi'an

Just read a puzzling fact in Le Monde science leaflet: someone at the “Great Internet Mersenne Prime Search” (GIMPS) just found a prime number with 17 million digits and…it is the 48th prime number of the form 2p-1. Which just means it is an odd number. How odd a remark!!! And how wrong. In fact, the short news item meant that this is a Mersenne number, of the form 2p-1! Another victim of a hasty cut&paste, I presume…

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