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Old 2020-06-18, 10:24   #1948
matzetoni
 
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Feb 2019

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Quote:
You tested only k=3329 from n=3330000?
For a Nash weight that low you tested only 516 n-values to find such prime. Lucky hit.
I had testing going on for 6 different k's, so I tested more like 3000-4000 candidates overall, still very lucky find. I was also surprised to find a prime with the k that had the lowest weight of these 6 k's.
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Old 2020-07-12, 05:22   #1949
carpetpool
 
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Nov 2016

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273*2^2024810-1 is prime! (609531 decimal digits) Time : 1198.071 sec.
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Old 2020-07-13, 14:05   #1950
Thomas11
 
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233*2^2426512-1 (730456 digits)
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Old 2020-08-18, 16:32   #1951
VBCurtis
 
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Feb 2005
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99*2^3026660-1 (911118 digits)
99*2^3029959-1 (912111 digits)
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Old 2020-08-18, 17:11   #1952
pinhodecarlos
 
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"Carlos Pinho"
Oct 2011
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Quote:
Originally Posted by VBCurtis View Post
99*2^3026660-1 (911118 digits)
99*2^3029959-1 (912111 digits)
Wow!
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Old 2020-08-18, 17:49   #1953
pepi37
 
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Dec 2011
After milion nines:)

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Quote:
Originally Posted by VBCurtis View Post
99*2^3026660-1 (911118 digits)
99*2^3029959-1 (912111 digits)
Nice double luck!
Congratulations
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Old 2020-11-04, 06:56   #1954
kuratkull
 
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195*2^4373994-1 is prime! (1316706 digits)

https://primes.utm.edu/primes/page.php?id=131376

Non-essential fun facts:
1) k=195 is the highest Nash weight k in RSP k<300, with a weight of 4106, followed by k=45 at weight 3747.
2) The last prime for k=195 was for n=1983875, found in 2014 by Peter Benson
3) My first prime since Aug 2008 (152521 digits) - i took a ca. 11 year hiatus from prime searching
4) First prime since I restarted prime searching in summer/autumn 2019, was really waiting for this
5) My first megaprime
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Old 2020-11-04, 21:27   #1955
pepi37
 
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After milion nines:)

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Quote:
Originally Posted by kuratkull View Post
195*2^4373994-1 is prime! (1316706 digits)

https://primes.utm.edu/primes/page.php?id=131376

Non-essential fun facts:
1) k=195 is the highest Nash weight k in RSP k<300, with a weight of 4106, followed by k=45 at weight 3747.
2) The last prime for k=195 was for n=1983875, found in 2014 by Peter Benson
3) My first prime since Aug 2008 (152521 digits) - i took a ca. 11 year hiatus from prime searching
4) First prime since I restarted prime searching in summer/autumn 2019, was really waiting for this
5) My first megaprime

So at the end effort was rewarded!
Congratulations!
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Old 2020-11-12, 15:44   #1956
Thomas11
 
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From our 1st megabit drive:

111*2^3060238-1 (921226 digits)
65*2^3080952-1 (927461 digits)
57*2^3093440-1 (931220 digits)
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