k=35
 

I'd like to reserve k=35 from 210k.

Progress of my other k's:
k=13, checked to 945000
k=21, to 553000
k=77, to 310000

status report on k=241
 

Unfortunately there were no new primes found for k=241.

k=241 checked to 200000 , no new primes found

reserving k=235 to 150000 , so someone else can test 150000 - 200000 to minimize the efforts and time.

Only one to go!
Shall we turn off the lights?
253 is almost done to 1000000 so I'm taking 191 also to 1000000
I'll make the sieve file from 1-10M available then.

Joss

UPdate k=185
 

k=185 is checked from 128100 to 200000, & is only prime for 133346.

Harvey563
:geek:

Update k=235
 

k=235 is checked to n=150000 and is prime for 136767

so: 235*2^136767 = prime! 41174 digits

Checking k=235 from n=150000 to n=200000

k=31 to 500000
 

I have checked 31*2^n-1 to 500000 and found the following primes: 1, 5, 7, 11, 13, 23, 33, 35, 37, 47, 115, 205, 235, 271, 409, 739, 837, 887, 2189, 3465, 4653, 5073, 8011, 8061, 21957, 24589, 25657, 44653, 50321, 57647, 62083, 78179, 80021, 81655, 111667, 150265, 177089, 196433, 274115, 306751, 311389, 315523. I quitting, so k=31 is up for grabs.

I have also checked k= 279 from 130000 to 135000, 145000 to 155000, & 165000 to 185000 with no primes found.

Harvey563 :cool:

update k=235
 

k=235 is now checked until n=180k and no new primes were found.
I expect to finish the range by monday.

Templus

revision on previous reply
 

I was a little too quick with making my previous post, in fact I indeed found a prime until n=180k:

235*2^178739-1 = prime!

[B]Templus[/B] congrats! This prime is large enough to report to the Top-5000 list of primes. Please check [URL=http://]http://primes.utm.edu[/URL] for details. The procedure is described [URL=http://primes.utm.edu/bios/submission.php]here[/URL]. First create a new prover account for yourself, giving your real name and your mail address. Then you should create a new proof-code listing yourself, LLR, and the sieving software you used (NewPGen ?). After that you can submit the prime using the created proof-code. If you have any questions please mail me either [EMAIL=kosmaj@yahoo.com]at Yahoo[/EMAIL], or using the forum private mail.

By the way,
35*2^246732-1 is prime,
k=35 checked to n=250000, further tests in progress.

k=235 is finished until n=200000 ! and my new prime number is....:
[code]
235*2^191973-1 is prime
[/code] I also posted this prime to the top5000 primelist.

I'm going to work further on k=235, I already made a sievefile until n=400000

k=11 and k=29 status
 

k=11 is tested up to n=700000 [continuing]
k=29 is tested up to n=1000000 [continuing]

And the big surprise: [B]11*2^696438-1 is prime![/B]

:banana: :banana: :banana:

-- Thomas11 L10