20200110, 22:58  #320 
Sep 2010
Weston, Ontario
1111001_{2} Posts 
So it is six months later and the number of unindexed primes is still 160. Clearly I did not appreciate when I wrote the above that new prime finds beyond the intervals in which I test every Leyland number are keeping pace with unindexed terms in those intervals that subsequently acquire indices. This situation is not likely to change appreciably for another 14 months (or so) when I finally bridge to the primes with ~100000 decimal digits.

20200115, 00:20  #321 
"Norbert"
Jul 2014
Budapest
2^{2}·3·7 Posts 
Another new PRP:
17275^18246+18246^17275, 77316 digits. 
20200118, 11:29  #322 
"Norbert"
Jul 2014
Budapest
2^{2}×3×7 Posts 
Another new PRP:
2618^26175+26175^2618, 89466 digits. 
20200124, 21:29  #323 
"Norbert"
Jul 2014
Budapest
2^{2}·3·7 Posts 
Another new PRP:
2996^26241+26241^2996, 91228 digits. 
20200204, 22:50  #324 
"Norbert"
Jul 2014
Budapest
84_{10} Posts 
Another new PRP:
18090^18307+18307^18090, 77941 digits. 
20200205, 22:17  #325 
"Norbert"
Jul 2014
Budapest
2^{2}·3·7 Posts 
Another new PRP:
18226^18359+18359^18226, 78223 digits. 
20200219, 21:23  #326 
"Norbert"
Jul 2014
Budapest
2^{2}·3·7 Posts 
Another new PRP:
2816^26445+26445^2816, 91226 digits. 
20200220, 19:21  #327 
Sep 2010
Weston, Ontario
11^{2} Posts 
Trivia
Of the currently 1671 known Leyland primes, only one has an L(x,y) where x and y are (base10) anagrams of each other.

20200222, 22:04  #328 
Sep 2010
Weston, Ontario
11^{2} Posts 

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