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Search: Posts Made By: Alex
Forum: Riesel Prime Search 2021-11-27, 20:35
Replies: 69
Views: 10,338
Posted By Alex
Plus 9993*10^n-1 (Near Repdigit)

Hello.
I hope, it`s a suitable thread for new posts.

I`m working on 9993*10^n-1 (Near Repdigit) with n=[1..10.000.000].
The range was sieved up to p=1e14.
I use Sr1sieve, PFGW, LLR.

Now it...
Forum: Twin Prime Search 2021-11-02, 12:45
Replies: 261
Views: 56,540
Posted By Alex
Plus k = 115059, 118305, 126423 upto n = 200K

Gary,
I`ve doublechecked and tested k = 115059, 118305, 126423 (they are near my ranges) upto n = 200K.
No new twins.

I`ve found only 1 Proth prime (~4500 Proth-Riesel pairs of candidates were...
Forum: Proth Prime Search 2021-10-31, 13:32
Replies: 6
Views: 1,184
Posted By Alex
Smile I have 8 active projects now (AP, xGF, Mersenne...

I have 8 active projects now (AP, xGF, Mersenne GPU TF, Near-repdigit, Proth, Pierpont, SG)
and report news in suitable thread, when pass a milestone or discover a new prime.
So see you soon :smile:
Forum: Twin Prime Search 2021-10-31, 13:09
Replies: 261
Views: 56,540
Posted By Alex
Plus k = 110.001 - 119.999, n = 110.001 - 120.000, twins = 0

Hello.
I`ve finished the range k = 110.001 - 119.999 & n = 110.001 - 120.000 for http://prothsearch.com last year (xGF).
1181 Proth primes were found.
Now I`ve checked them to k*2^n-1 : no twins...
Forum: Proth Prime Search 2021-10-15, 10:16
Replies: 6
Views: 1,184
Posted By Alex
Wink Sure. So there is no word "proth" in the first...

Sure. So there is no word "proth" in the first post.
Forum: Proth Prime Search 2021-10-14, 09:27
Replies: 6
Views: 1,184
Posted By Alex
Post Hello, bur. I myself accidentally found out...

Hello, bur.

I myself accidentally found out about Pierpont primes looking someone's old results page.

3^39 is max < 2^63.

When I discovered a new Proth prime (P), I check a lot of possible...
Forum: Proth Prime Search 2021-10-09, 15:34
Replies: 6
Views: 1,184
Posted By Alex
Plus 4052555153018976267*2^n+1 (Pierpont 3^39*2^n+1)

Hello.
I`m working on 4052555153018976267*2^n+1 (Pierpont 3^39*2^n+1) with n=[1..10.000.000].
The range was sieved up to p=114e12.
I use Sr1sieve, PFGW, LLR.

Now it is checked n=[1..1.000.000]...
Forum: Proth Prime Search 2021-09-23, 14:53
Replies: 8
Views: 2,590
Posted By Alex
Plus Thank you, bur. I have finished my range: ...

Thank you, bur.

I have finished my range:
1000039*2^n+1 with n=[1..2.000.000]
Totally passed 15.825 tests.
Confirmed 7 old primes and found 1 new :-)

1000039*2^382+1 is prime! (121 decimal...
Forum: Proth Prime Search 2021-08-03, 13:59
Replies: 8
Views: 2,590
Posted By Alex
Arrow Hello. Yesterday I`ve got a new result...

Hello.
Yesterday I`ve got a new result beautiful enough:

1000039*2^1721722+1 is prime! (518296 decimal digits) Time : 1944.927 s. - Found in 2021 (P420 code)...
Forum: Proth Prime Search 2021-03-23, 12:54
Replies: 8
Views: 2,590
Posted By Alex
Thank you, rogue. Thank you, bur. I`ve...

Thank you, rogue.

Thank you, bur.
I`ve chosen k=1000039 because it is wellsieved.
For the comparison sieving n=[1..1000000] up to p<1e6:
k=1000039 has 16891 candidates
k=1281979 has 39706...
Forum: Proth Prime Search 2021-03-15, 22:02
Replies: 8
Views: 2,590
Posted By Alex
Plus 1000039*2^n+1

Hello.
I`m working on 1000039*2^n+1 with n=[1..2.000.000] (k=1.000.039 is wellsieved).
Now it was passed n=[1..1.000.000] (8150 tests).

1000039*2^382+1 is prime! (121 decimal digits) Time :...
Forum: Marin's Mersenne-aries 2020-08-17, 21:43
Replies: 43
Views: 17,987
Posted By Alex
#1 and #2 - are both about users` consents to...

#1 and #2 - are both about users` consents to switch type of work. Surelly, they should manually upgrade their software.
#3 - They are George`s projects, surelly only he must decide to.
Forum: Marin's Mersenne-aries 2020-08-17, 19:17
Replies: 43
Views: 17,987
Posted By Alex
Lightbulb Hi. I have several ideas. 1) How to obtain...

Hi.
I have several ideas.

1) How to obtain the consent of users to upgrade their software.
We all have the page "View the CPU's in your account" (https://www.mersenne.org/cpus/)
The consent...
Forum: Lounge 2020-08-15, 11:54
Replies: 11
Views: 6,066
Posted By Alex
Smile Upto 100% for ordinary exponent, because thit is...

Upto 100% for ordinary exponent, because thit is better than Double-check.

Perhaps, the same price for each next factor of the same exponent, because this may be the only way to full factoring.
...
Forum: Conjectures 'R Us 2020-08-14, 19:08
Replies: 4
Views: 4,390
Posted By Alex
Question Hi. I'm working on 9993 * 10 ^ n - 1. ...

Hi.
I'm working on 9993 * 10 ^ n - 1.
Reserved n upto 10M
Sieved to 40T
Checked n upto 358k+

New prime found:
9993 * 10 ^ 237822 - 1

Where should I report it now and next?
Showing results 1 to 15 of 15

 
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