This one has not been yet verified but it looks genuine.
[SIZE="3"]6962 · 31[SUP]2863120[/SUP]  1[/SIZE] 4269952 Digits. Largest of the year. Will rank 20 if verified. [URL="https://primes.utm.edu/primes/page.php?id=130702"]https://primes.utm.edu/primes/page.php?id=130702[/URL] 
[QUOTE=rudy235;538794]This one has not been yet verified but it looks genuine.
[SIZE="3"]6962 · 31[SUP]2863120[/SUP]  1[/SIZE] 4269952 Digits. Largest of the year. Will rank 20 if verified. [URL="https://primes.utm.edu/primes/page.php?id=130702"]https://primes.utm.edu/primes/page.php?id=130702[/URL][/QUOTE] This is not strictly a Riesel Prime Search prime which have b=2 and k<300 (?). Nevertheless, it is a great achievement by CRUS. 
[QUOTE=paulunderwood;538799]This is not strictly a Riesel Prime Search prime which have b=2 and k<300 (?). Nevertheless, it is a great achievement by CRUS.[/QUOTE]
You are totally right!:smile: It might be posted somewhere else? Any suggestions? 
[QUOTE=rudy235;538830]You are totally right!:smile: It might be posted somewhere else? Any suggestions?[/QUOTE]
[url]https://www.mersenneforum.org/showthread.php?t=6374&page=18[/url] 
[QUOTE=Cruelty;537960]Solid 11 years :smile: This is quite "heavy" k.[/QUOTE]
It's quite more than 11 years now: I've included the primes found from the older primes thread with post links in the Wiki and your first found for [url='https://www.rieselprime.de/ziki/Riesel_prime_25']k=25[/url] was in 2006! 
discovered my first mega prime with help of the PG sieve file
[B]3329 · 2[SUP]3388472[/SUP]  1[/B] is [URL="https://primes.utm.edu/primes/page.php?id=130974"]prime[/URL]! (1,020,036 digits) :jvang: Really lucky there, I began testing at exponent 3,330,000 about a month ago. 
You tested only k=3329 from n=3330000?
For a Nash weight that low you tested only 516 nvalues to find such prime. Lucky hit. 
[QUOTE]You tested only k=3329 from n=3330000?
For a Nash weight that low you tested only 516 nvalues to find such prime. Lucky hit. [/QUOTE]I had testing going on for 6 different k's, so I tested more like 30004000 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. 
273*2^20248101 is prime! (609531 decimal digits) Time : 1198.071 sec.

233*2^24265121 (730456 digits)

99*2^30266601 (911118 digits)
99*2^30299591 (912111 digits) 
[QUOTE=VBCurtis;554150]99*2^30266601 (911118 digits)
99*2^30299591 (912111 digits)[/QUOTE] Wow! 
[QUOTE=VBCurtis;554150]99*2^30266601 (911118 digits)
99*2^30299591 (912111 digits)[/QUOTE] Nice double luck! Congratulations 
[FONT=Courier New]195*2^43739941 is prime! (1316706 digits)[/FONT]
[URL]https://primes.utm.edu/primes/page.php?id=131376[/URL] Nonessential 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 
[QUOTE=kuratkull;562148][FONT=Courier New]195*2^43739941 is prime! (1316706 digits)[/FONT]
[URL]https://primes.utm.edu/primes/page.php?id=131376[/URL] Nonessential 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[/QUOTE] So at the end effort was rewarded! Congratulations! 
From our 1st megabit drive:
111*2^30602381 (921226 digits) 65*2^30809521 (927461 digits) 57*2^30934401 (931220 digits) 
25*2^56589151 is prime! (1703505 decimal digits)

55*2^20483051 is prime! (627441 digits)

[QUOTE=Trilo;571293]55*2^20483051 is prime! (627441 digits)[/QUOTE]
That range was already tested by Kosmaj. Luckily I found it on [URL="https://primes.utm.edu/primes/page.php?id=131830"]PrimePages[/URL]. It's 55*2^20[B]84[/B]3051. 
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