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Old 2020-09-06, 14:07   #404
rogue
 
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"Mark"
Apr 2003
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Quote:
Originally Posted by pxp View Post
I decided to take my sieving of interval #21 to 1e10 and that still has a couple of days to go. In the meantime I am pfgw-ing recently assigned (and already sieved) interval #28 [L(148999,10) - L(149999,10)] and have now my first hit therein:

33845^26604+26604^33845 is 3-PRP!

I'm not sure factordb.com will PRP this for me. I noticed that Norbert's PRPTop submissions for a couple of his larger Leyland primes has a list of prime-PRPs from prime 2 to 11. Which brings me to ask why pfgw default reports only 3-PRPs. How does one get it to do other primes? Is it even necessary?
Use -b to choose a different base for the PRP test.
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