New repunit (PRP) primes found, 5794777 and 8177207 decimal digits (PRP records) - Page 6

MrRepunit · 2021-05-12, 19:53

Quote:

Originally Posted by Dr Sardonicus

As previously mentioned in this post, the Details section on this page, which Batalov supplied in this post, has that information.

But unluckily our results displayed on Kurt's site do not include the results of Serge and Ryan (except for the new PRPs). The dump includes just the results from our own search. I would really like to extend our page with the new results though, but currently it seems we will not get the residues or new factors.

Batalov · 2021-05-12, 20:42

I have just received a snapshot of current results from Ryan (because we chatted about that request; usually I hear only about hits).
I also have lists of factors elsewhere; will post later. I also currently sieve in 10-12M region (to 64 and to 67-68 bits eventually).

And here it is - attached.

MrRepunit · 2021-05-12, 21:15

Quote:

Originally Posted by Batalov

I have just received a snapshot of current results from Ryan (because we chatted about that request; usually I hear only about hits).
I also have lists of factors elsewhere; will post later. I also currently sieve in 10-12M region.

And here it is - attached.

Thank you very much! I will put them into the database and and publish them on Kurt's site.

Cheers,
Danilo

Batalov · 2021-05-12, 21:17

I will probably grep for all factors that are not present in the site (even though to be safe we started from scratch), to keep the factor "delta" file size to minimum. (I also have a pari script to check all factors, no matter from which origin.)

MrRepunit · 2021-05-12, 22:10

I put all known factors from prime exponents with p > 4300000 into one file, this should make it easier to grep for new factors.
Format is (one line per factor)
exponent factor

I just checked all of them, all are prime and really divide the corresponding repunit R[exponent]

Batalov · 2021-05-13, 01:11

Code:

awk '{print "if(Mod(10,"$2")^"$1"!=1,print("$1"))"}' factors-from-4.3M.txt |gp -q

Cool beans. They are all good. I will attach here new factors, a bit later.

paulunderwood · 2021-05-26, 02:32

R8177207 is an official top PRP.

Currenlty it does not appear on PrimePages's repunit page.

Cybertronic · 2021-05-27, 10:22

missing an entry here

https://primes.utm.edu/top20/page.php?id=57

Norman

Batalov · 2021-05-27, 17:57

Chris might be on a vacation or something similar.
We haven't heard back (but we did send in the news and the updated graph).

2021-05-13, 01:11	#61
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2²·23·103 Posts	Code: awk '{print "if(Mod(10,"$2")^"$1"!=1,print("$1"))"}' factors-from-4.3M.txt \|gp -q Cool beans. They are all good. I will attach here new factors, a bit later.

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2021-05-12, 21:17	#59
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 22404₈ Posts	I will probably grep for all factors that are not present in the site (even though to be safe we started from scratch), to keep the factor "delta" file size to minimum. (I also have a pari script to check all factors, no matter from which origin.)

2021-05-26, 02:32	#62
paulunderwood Sep 2002 Database er0rr 3,739 Posts	R8177207 is an official top PRP. Currenlty it does not appear on PrimePages's repunit page.

2021-05-27, 10:22	#63
Cybertronic Jan 2007 Germany 328₁₀ Posts	missing an entry here https://primes.utm.edu/top20/page.php?id=57 Norman

2021-05-27, 17:57	#64
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2²·23·103 Posts	Chris might be on a vacation or something similar. We haven't heard back (but we did send in the news and the updated graph).