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Search took 0.01 seconds. Search: Posts Made By: Batalov
Forum: NeRDs 2015-02-22, 18:37
Replies: 15
Sticky: Primes found!
Views: 12,351
Posted By Batalov
Because there was a ton of them, and even more...

Because there was a ton of them, and even more with >29% (which I didn't submit). The comment there says it all (they are a dataset for anyone who wants to learn CHG in practice).

The real search...
Forum: NeRDs 2015-01-23, 17:40
Replies: 15
Sticky: Primes found!
Views: 12,351
Posted By Batalov
Cool Skipping a few intermediate records, here is one...

Skipping a few intermediate records, here is one that could be a decent candidate for someone with the next version of Primo:
10^31047-2*10^26802-1 is prime and
10^31047-2*10^26802-3 is a Fermat...
Forum: NeRDs 2015-01-18, 19:13
Replies: 15
Sticky: Primes found!
Views: 12,351
Posted By Batalov
Cool And here is its evil twin: i.e. all digits are...

And here is its evil twin: i.e. all digits are "7"s, except for one and two "9"s.
(7*10^10014+18*10^3046+11)/9 (PRP) and
(7*10^10014+18*10^3046-7)/9 (PRP)
ECPP proofs are in progress.

There...
Forum: NeRDs 2015-01-17, 04:16
Replies: 15
Sticky: Primes found!
Views: 12,351
Posted By Batalov
Thumbs up a NeRDs-related twin pair

A small but elegant twin pair (using one "7" and two "7"s, with the rest of digits being "9"s):
10^4621-2*10^4208-1 is prime
10^4621-2*10^4208-3 is prime (Prime certificate is available)
Forum: NeRDs 2014-12-23, 00:41
Replies: 15
Sticky: Primes found!
Views: 12,351
Posted By Batalov
And forth: 10^388080 - 10^342029 - 1...

And forth:
10^388080 - 10^342029 - 1 (http://primes.utm.edu/primes/page.php?id=118985)
:george::george:
Forum: NeRDs 2014-11-08, 23:19
Replies: 15
Sticky: Primes found!
Views: 12,351
Posted By Batalov
Thumbs up The records in CHG are not in the size but the %...

The records in CHG are not in the size but the % factored part, and I've played with that some years earlier.

Among other things, I have proven a relatively uninteresting, artificially constructed...
Forum: NeRDs 2014-11-08, 17:26
Replies: 15
Sticky: Primes found!
Views: 12,351
Posted By Batalov
Smile Two primes for the 388080 series

Overnight, one iteration of CHG came through! Now, there's a good chance that we will have a proof (based on the %-age, we will need maybe 6-7 iterations; and I sacrificed factors of N-1 to make the...
Forum: NeRDs 2014-11-08, 07:20
Replies: 15
Sticky: Primes found!
Views: 12,351
Posted By Batalov
Cool Well, what do you know. I have one, and it's a...

Well, what do you know. I have one, and it's a toughie: only 29% factored N+1.

Will have to give it a crack with CHG.gp script. (I've proven some primes with CHG before, but never this big. The...
Showing results 1 to 8 of 8

 
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