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2020-06-18, 10:24   #1948
matzetoni

Feb 2019

6116 Posts

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.

 2020-07-12, 05:22 #1949 carpetpool     "Sam" Nov 2016 5·67 Posts 273*2^2024810-1 is prime! (609531 decimal digits) Time : 1198.071 sec.
 2020-07-13, 14:05 #1950 Thomas11     Feb 2003 192010 Posts 233*2^2426512-1 (730456 digits)
 2020-08-18, 16:32 #1951 VBCurtis     "Curtis" Feb 2005 Riverside, CA 563710 Posts 99*2^3026660-1 (911118 digits) 99*2^3029959-1 (912111 digits)
2020-08-18, 17:11   #1952
pinhodecarlos

"Carlos Pinho"
Oct 2011
Milton Keynes, UK

10100000010102 Posts

Quote:
 Originally Posted by VBCurtis 99*2^3026660-1 (911118 digits) 99*2^3029959-1 (912111 digits)
Wow!

2020-08-18, 17:49   #1953
pepi37

Dec 2011
After milion nines:)

65716 Posts

Quote:
 Originally Posted by VBCurtis 99*2^3026660-1 (911118 digits) 99*2^3029959-1 (912111 digits)
Nice double luck!
Congratulations

 2020-11-04, 06:56 #1954 kuratkull     Mar 2007 Estonia 149 Posts 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
2020-11-04, 21:27   #1955
pepi37

Dec 2011
After milion nines:)

3×541 Posts

Quote:
 Originally Posted by kuratkull 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!

 2020-11-12, 15:44 #1956 Thomas11     Feb 2003 27·3·5 Posts From our 1st megabit drive: 111*2^3060238-1 (921226 digits) 65*2^3080952-1 (927461 digits) 57*2^3093440-1 (931220 digits)
 2021-01-26, 12:00 #1957 Cruelty     May 2005 22·11·37 Posts 25*2^5658915-1 is prime! (1703505 decimal digits)
 2021-02-11, 04:58 #1958 Trilo     "W. Byerly" Aug 2013 81*2^3174353-1 100001012 Posts 55*2^2048305-1 is prime! (627441 digits)

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