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Old 2010-10-19, 16:35   #27
alpertron
 
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Aug 2002
Buenos Aires, Argentina

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The factor of M937 was not found by Primenet. I added it manually after copying it from http://www.mersenneforum.org/showpos...5&postcount=74 . The huge prime factor of M919 was found by Batalov and Dodson using the SNFS algorithm while the factor of M937 was found by Bos, Kleinjung, Lenstra and Montgomery using the ECM algorithm. This information was taken from the Cunningham project.
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