[URL="http://primes.utm.edu/primes/page.php?id=123474"]67*688^423893+1[/URL] found by Franck Levayer (1202836 digits)

[URL="http://primes.utm.edu/primes/page.php?id=123571"]106*564^175330+1[/URL] found by jaibenz (482384 digits)

3 remain

R745
 

21 k's remain for R745:

[URL="https://primes.utm.edu/primes/page.php?id=123611"]21290 * 745^203998-1[/URL] (585919 digits)

Nice one. :smile:

[URL="http://primes.utm.edu/primes/page.php?id=123675"]68*995^465908-1[/URL] found by Ralfy (1396712 digits)

[QUOTE][URL="http://primes.utm.edu/primes/page.php?id=123675"]68*995^465908-1[/URL] found by Ralfy (1396712 digits) [/QUOTE]

Nice juicy fat one. :smile::geek:

Small one but it is on Top 5000 :)
[URL="http://primes.utm.edu/primes/page.php?id=123734"]8*53^227183+1[/URL] is prime! (391728 decimal digits) Time : 207.042 sec.

[QUOTE]Small one but it is on Top 5000 :)
[URL="http://primes.utm.edu/primes/page.php?id=123734"]8*53^227183+1[/URL] is prime! (391728 decimal digits) Time : 207.042 sec.
[/QUOTE]

They are all nice. Getting harder to find. Nice:smile:

[QUOTE=MyDogBuster;463223]They are all nice. Getting harder to find. Nice:smile:[/QUOTE]
Yes. 7 months and 11 days without prime :)

[URL="http://primes.utm.edu/primes/page.php?id=123786"]29*564^326765+1[/URL] found by grcpool.com-2 (899024 digits)

Long time no eat for R36:
80883*6^595142-1 is prime! (463117 digits)