Five months ago, I showcased the then-ten-largest-known Leyland primes. Here's an update:
500973 (100207,99856) Gabor Levai Nov 2021
500702 (100263,98600) Gabor Levai Sep 2021
386642 (81650,54369) Yusuf AttarBashi Jun 2021
386561 (80565,62824) Hans Havermann Aug 2021
386548 (83747,41272) Hans Havermann Aug 2021
386434 (328574,15) Sergey Batalov May 2014
302858 (84181,3960) Hans Havermann Nov 2021
301815 (83278,4209) Hans Havermann Sep 2021
301763 (64431,48250) Hans Havermann Sep 2021
301716 (67237,30714) Hans Havermann Sep 2021
The first column gives the number of decimal digits. The Leyland number of an (x,y) pair is x^y + y^x. Nine of these ten entries are new. Of course my list of all known Leyland primes is always up-to-date.
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