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Old 2020-07-11, 19:34   #155
alpertron
 
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Aug 2002
Buenos Aires, Argentina

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After running my Nvidia GTX 950 for 30 days, I was able to find more than 60 factors in the ranges 71->72 bits, 72->73 bits and partially in 73->74 bits, reducing the number of unfactored Mersenne numbers in the range 987.9M to 1999.

According to https://www.mersenne.ca/status/tf/0/0/4/98700, the number is 2001, but this includes the factored numbers M987977819 and M987976229 that were found after 00:00 GMT today, so the current number is 1999.
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