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Old 2022-03-31, 21:44   #1981
pepi37
 
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Dec 2011
After milion nines:)

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Quote:
Originally Posted by Batalov View Post
Just for kicks and giggles I tested a little bit of k=1965 (which happens to be my year) and found unlikely quickly
1965 · 23322579 - 1 (1,000,200 digits) and
1965 · 23325639 - 1 (1,001,121 digits).
Just a curiosity.
Since I follow you work, you never search for "uninteresting"so I was sure 100% 1965 is year of your birth :) Lucky prime year :)
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Old 2022-04-10, 08:57   #1982
Thomas11
 
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Feb 2003

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225*2^2055433-1 (618750 digits)
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Old 2022-04-10, 09:15   #1983
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Feb 2003

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From the 2nd megabit drive:

137*2^2244398-1 (675634 digits)
185*2^2264906-1 (681807 digits)
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Old 2022-05-29, 12:41   #1984
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Sep 2002
Database er0rr

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Vincent just found 9959 * 2^4308760 - 1 to be prime
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Old 2022-07-22, 04:12   #1985
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Sep 2002
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9473*2^4543680-1 (1367788 digits) found Vincent Diepeveen
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