Leyland Primes (x^y+y^x primes)

[NorbSchneider]

Another new PRP:
419^52446+52446^419, 137525 digits.

[rogue]

Originally Posted by pxp

I can probably run this every time I update my a094133.txt document and share it here. A couple of minor issues: Christ van Willegen and Jens Kruse Andersen have lost their surnames and Göran Hemdal has lost the umlauted o (I assume that it is visible in the .txt version).

These pages are not loading today. Says the server is not responding

[pxp]

Thanks for the heads-up. Occasionally my internet service provider changes the number of my IP address. This happens rarely but without notice and since I access chesswanks.com locally I usually don't notice until someone complains. When it happens I have to go to DYNDNS and have the domain point to the new number, which I have now done.

[pxp]

I have examined all Leyland numbers in the gap between L(147999,10) <148000> and L(148999,10) <149000> and found 11 new primes.

[pxp]

Originally Posted by pxp

That makes L(222748,3) #1986.

I have examined all Leyland numbers in the four gaps between L(222748,3) <106278>, #1986, and L(45405,286) <111532> and found 80 new primes. That makes L(45405,286) #2070.

That was interval #17. Interval #18 still has a month of sieving before I can even get a start on it. I'll be doing intervals #21, #25, and #26 until then.

[NorbSchneider]

Another new PRP:
208^52765+52765^208, 122313 digits.

[NorbSchneider]

Another new PRP:
13699^27268+27268^13699, 112800 digits.

[pxp]

I have examined all Leyland numbers in the gap between L(146999,10) <147000> and L(147999,10) <148000> and found 12 new primes.

[NorbSchneider]

Another new PRP:
13899^27442+27442^13899, 113692 digits.

[NorbSchneider]

Another new PRP:
13706^27459+27459^13706, 113596 digits.

[sweety439]

The smallest k such that n^k+k^n is prime (A243147)