20181215, 23:24  #112  
"Jeppe"
Jan 2016
Denmark
2·7·13 Posts 
Quote:
/JeppeSN 

20181216, 00:17  #113 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2·3·1,657 Posts 
Yes, there are many more; I've seen duplicates in other classes before. (Because there are similarly different ways to write values, e.g. using Phi(), or gcd() ... for primitive parts or Aurifeuillean parts. PRP owners should better have an intake evaluator and checker.
The bracketed form is hard to search for. You can use "x^?+y^?" and then filter, but that's not the first form that comes to mind. 
20181216, 01:57  #115 
"Serge"
Mar 2008
Phi(4,2^7658614+1)/2
2×3×1,657 Posts 
How far did anybody search?

20220802, 15:30  #116 
"Jeppe"
Jan 2016
Denmark
2·7·13 Posts 
Kellen Shenton found the PRP 1196^131072 + 595^131072, to appear on PRP Top.
As soon as it is verified that 1196 is minimal for this exponent, OEIS will be updated. /JeppeSN 
20220821, 19:44  #117 
"Jeppe"
Jan 2016
Denmark
2·7·13 Posts 
Ryan Propper found PRPs (35963^524288+1)/2 and (187503^262144+1)/2 and added them to A275530. /JeppeSN

20220830, 16:41  #118 
"Jeppe"
Jan 2016
Denmark
2×7×13 Posts 
Kellen Shenton found PRP 200^262144 + 119^262144, and A291944 is updated. /JeppeSN

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