Leyland Primes (x^y+y^x primes) - Page 55

lghu · 2022-11-08, 21:30

Two new Leyland PRP:
101643^87368+87368^101643, index: 6136565930, 502254 digit
101839^83028+83028^101839, index: 6107998207, 500969 digit

lghu · 2022-11-08, 21:32

Quote:

Originally Posted by NorbSchneider

Are you from Hungary, can you speak hungarian?

Igen.

NorbSchneider · 2022-11-24, 23:18

Hans: chesswanks.com/num/a094133.txt URL can I not reach. Is offline or online the page?

pxp · 2022-11-25, 02:25

Hopefully I have fixed it.

NorbSchneider · 2022-11-25, 13:34

Hopefully I have fixed it.

Yeah it's OK now.

NorbSchneider · 2022-12-05, 18:12

Another new PRP:
39470^39537+39537^39470, 181723 digits.

NorbSchneider · 2022-12-28, 19:16

Another new PRP:
515^63898+63898^515, 173280 digits.

bur · 2023-01-09, 17:03

The 59k+ digits Leyland prime

3^125330 + 125330^3

was proven prime via ECPP in mid December by Greg Childers, which, to my knowledge, makes it the largest prime proven via ECPP. However, so far it hasn't been included in the ECPP list at prime.utm.edu. Does anyone know the reason? The certificate is uploaded and verified to/by factordb.

paulunderwood · 2023-01-09, 17:50

Quote:

Originally Posted by bur

The 59k+ digits Leyland prime

3^125330 + 125330^3

was proven prime via ECPP in mid December by Greg Childers, which, to my knowledge, makes it the largest prime proven via ECPP. However, so far it hasn't been included in the ECPP list at prime.utm.edu. Does anyone know the reason? The certificate is uploaded and verified to/by factordb.

There have been a few recent ECPP numbers not making their respective top20 tables. I told Prof Caldwell. I guess he is busy retiring. Perhaps someone can email him about these numbers.

frmky · 2023-01-09, 18:28

I sent an email a couple of weeks ago but haven't gotten a reply. I just chalked it up to some combination of retiring and the holidays.

mart_r · 2023-01-09, 20:08

Quote:

Originally Posted by paulunderwood

I guess he is busy retiring.

For many people, retirement is the busiest age of their lives.

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2022-11-08, 21:30	#595
lghu Nov 2019 2²·5 Posts	Two new Leyland PRP: 101643^87368+87368^101643, index: 6136565930, 502254 digit 101839^83028+83028^101839, index: 6107998207, 500969 digit

2022-11-24, 23:18	#597
NorbSchneider "Norbert" Jul 2014 Budapest 7C₁₆ Posts	Hans: chesswanks.com/num/a094133.txt URL can I not reach. Is offline or online the page?

2022-11-25, 02:25	#598
pxp Sep 2010 Weston, Ontario 2·7·17 Posts	Hopefully I have fixed it.

2022-11-25, 13:34	#599
NorbSchneider "Norbert" Jul 2014 Budapest 174₈ Posts	Hopefully I have fixed it. Yeah it's OK now.

2022-12-05, 18:12	#600
NorbSchneider "Norbert" Jul 2014 Budapest 124₁₀ Posts	Another new PRP: 39470^39537+39537^39470, 181723 digits.

2022-12-28, 19:16	#601
NorbSchneider "Norbert" Jul 2014 Budapest 2²·31 Posts	Another new PRP: 515^63898+63898^515, 173280 digits.

2023-01-09, 17:03	#602
bur Aug 2020 796581e-4;32539e-3 2⁴×41 Posts	The 59k+ digits Leyland prime 3^125330 + 125330^3 was proven prime via ECPP in mid December by Greg Childers, which, to my knowledge, makes it the largest prime proven via ECPP. However, so far it hasn't been included in the ECPP list at prime.utm.edu. Does anyone know the reason? The certificate is uploaded and verified to/by factordb.

2023-01-09, 18:28	#604
frmky Jul 2003 So Cal 7²×53 Posts	I sent an email a couple of weeks ago but haven't gotten a reply. I just chalked it up to some combination of retiring and the holidays.