A generalized repunit PRP in base 103

For the list of known generalized repunit (probable) primes (sorted by base) see http://www.fermatquotient.com/PrimSerien/GenRepu.txt and https://web.archive.org/web/20021111141203/http://www.users.globalnet.co.uk/~aads/primes.html and http://www.primenumbers.net/Henri/us/MersFermus.htm and http://www.bitman.name/math/table/379

For the list of top generalized repunit definitely primes see https://t5k.org/top20/page.php?id=16 and https://t5k.org/primes/search.php?Comment=Generalized%20repunit&OnList=all&Number=1000000&Style=HTML and https://web.archive.org/web/20131019185910/http://www.primes.viner-steward.org/andy/titans.html

For the list of top generalized repunit (probable) primes see https://pzktupel.de/Primetables/TableRepunitGen.php and https://web.archive.org/web/20120227163453/http://phi.redgolpe.com/

To be completed...