20210909, 08:18  #474 
Nov 2019
2^{2} Posts 
I found a Leyland PRP with more than 500,000 digits, details later...

20210911, 12:38  #475 
Nov 2019
100_{2} Posts 
pfgw64: ((100263^98600)+(98600^100263)) is 3PRP! (7167.1435s+0.0099s)
ecppdj bpsw: ((100263**98600)+(98600**100263)) PROBABLE PRIME (135355 sec) Gabor Levai 
20210911, 12:43  #476  
Sep 2002
Database er0rr
3863_{10} Posts 
Quote:
Congrats for such a huge find. Last fiddled with by paulunderwood on 20210911 at 12:46 

20210913, 08:39  #478  
Nov 2019
4_{8} Posts 
Quote:
((100263^98600)+(98600^100263)) is Fermat and Lucas PRP! (37359.5544s+0.0101s) 

Thread Tools  
Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Leyland Primes: ECPP proofs  Batalov  XYYXF Project  19  20210720 21:07 
Mersenne Primes p which are in a set of twin primes is finite?  carpetpool  Miscellaneous Math  3  20170810 13:47 
Distribution of Mersenne primes before and after couples of primes found  emily  Math  34  20170716 18:44 
On Leyland Primes  davar55  Puzzles  9  20160315 20:55 
possible primes (real primes & poss.prime products)  troels munkner  Miscellaneous Math  4  20060602 08:35 