201 520586 is prime. March was dry.. I hope April makes up for it.
-Curtis

914135145*2^416219-1 (125304 digits)

915779865*2^318349-1 (95842 digits)

From k>2000:

2351*2^373486-1 (112434 digits)

From the 5th drive:

129*2^603488-1 (181671 digits)

201*2^540810-1 is prime. (162803 digits)

201 has produced 11 primes from 280k to 540k. :rolleyes:
-Curtis

After a dry march - I find my third prime for k=49:
[URL="http://primes.utm.edu/primes/page.php?id=79999"]49 * 2^691469-1[/URL] (208155 digits) :grin:

From k>2000:

2053*2^375747-1 (113115 digits)

Note that this one is database Id. (submission No.?) [URL="http://primes.utm.edu/primes/page.php?id=80000"]80000[/URL] of the Top5000 database! (Though not the 80000th prime...)

181*2^823853-1 (248007 digits)

woo-hoo!

From the 5th drive:

267*2^607688-1 (182935 digits)

20152491645*2^301278-1
20152491645*2^312808-1
20152491645*2^325708-1
20152491645*2^326143-1

904883265*2^417730-1 (125759 digits)

20152491645*2^333609-1 (100437 digits)

From the 5th drive:

279*2^616044-1 (185451 digits)

1693514745*2^370471-1 (111533 digits)

Finally got a big one!

[B]253*2^1722623-1[/B] (518564 digits)

Currently ranked 44th largest.

:bounce wave:

Wow! Congrats!

Really WOW! :smile: Congratulation!!!!

Guacamole.

That's ample reward for testing these semi-low-weight k<300 values. Nice find.
-Curtis

Congrats Kosmaj!

Congrats
 

:shock: :shock: :shock: :shock:
HUGE prime and HUGE congrats Kosmaj!
How many computers are you using?

nuggetprime

Thank you all! I was surprised myself. :smile: I began working on k=253 about half a year ago because it was the only k<300 with no gigantic primes (with more than 10,000 digits). I began at 1165k where Joss stopped. The majority of tests was done on a single 3GHz P-4. Currently one test requires almost exactly 100 minutes (5970sec for the prime) and I was about to stop at 1.75M. I have sieved values to n=3M through p=5T. The average "density" is 3.63 values per 1000 n.

Congrats! I hope you also find a prime for k=7, as that k is long overdue for a prime.

52654604145*2^314483-1 (94680 digits)

52654604145*2^315664-1 (95036 digits)

207*2^481385-1 is prime (144914 digits)

2151*2^339975-1 (102347 digits)

197*2^635042-1 is Prime.
-Curtis

Three primes
 

445419975*2^439597-1 (132341 digits)
261*2^618918-1 (186316 digits, 5th Drive)
173*2^828808-1 (249499 digits)

:w00t:

Congratulations [B]Kosmaj[/B]!
BTW: in 3 days two months will pass from my last reportable prime :sad:

Cruelty, thanks, they were found during last 10 days. Sorry to hear about your dry spell. Trying to diversify in terms of K might be a good idea.

In the meanwhile one more prime over here :smile:
445419975*2^444256-1 (133744 digits)

The previous prime for k=445419975 was at 301k and nothing until n=439597 the other day and 444256 now :surprised

85*2^656039-1 (197490 digits)

Another one from 207.
207*2^507833-1 is prime (152876 digits) :w00t: :flex:

-Steven

1693514745*2^396746-1 (119442 digits)

One more from k=85:

85*2^683573-1 (205778 digits)

k=85 has a large primeless gap between 147k and 656k, and then 2 primes at 656k and now at 683k :surprised

BTW, I'm now using a new prover's code L323 with srsieve included.

111*2^791502-1 is prime. By far my biggest ever.
-Curtis

Congrats on the big prime VBCurtis!

228461805*2^320284-1

Decimal Digits:96424

[URL]http://primes.utm.edu/primes/page.php?id=80687[/URL]

12345*2^948054-1 (285397 digits) :whistle:

Cruelty
 

Nice prime. Congrats! :cool:

857996205*2^386362-1 (116316 digits)

20152491645*2^352767-1 (106204 digits)
52654604145*2^362408-1 (109107 digits)

81*2^741917-1 (223342 digits)

Congratulations Amphoria!
BTW: everytime I see your post in this thread, I wonder if you have managed [URL="http://www.mersenneforum.org/showpost.php?p=86959&postcount=1"]it[/URL] the third time, looks like not yet :wink:

2065*2^354195-1 (106627 digits)
2153*2^361238-1 (108747 digits)
2177*2^364734-1 (109800 digits)
2177*2^371550-1 (111852 digits)

[SIZE=3][SIZE=2]35*2^839082-1[/SIZE][SIZE=2]

My biggest so far :smile:

[/SIZE]
[/SIZE]

Flatlander
 

With a two days delay: Congrats on a nice prime! :smile:

There was one k=35 prime at around 805k, and now this one at 839k, nice neighbours! :w00t:

[SIZE=2]55*2^651015-1[/SIZE]

This was discovered about 3 days ago but I had a shortcut to the wrong output file on my desktop. :grin:

69*2^978209-1 (294473 digits)

My largest prime yet!

Larry
 

Congrats on a nice prime! :w00t:

I wish you to hit your first megabit prime soon!

From the 5th RPS Drive:

261*2^660709-1 (198896 digits)

915779865*2^344632-1 (103754 digits)
915779865*2^386640-1 (116400 digits)

2179*2^387961-1 (116792 digits)

From the 5th Drive:

51*2^657705-1, 197991 digits, by Battlemaxx, submitted
267*2^662524-1, 199443 digits by Jokern, submission in progress

I just submitted the prime found by Jokern using the Top-5000 anonymous account. If Jokern wants to reveal his identity he can do it any time, and on that occasion the credit for the prime will be transfered to his real name account.

3135*2^419470-1 (126277 digits)

45*2^645542-1 is prime.
-Curtis


.

1515*2^955219-1 (287553 digits)

20152491645*2^393100-1 (118346 digits)

197*2^825188-1 is prime. (248409 digits).

-Curtis

2123*2^408252-1 (122900 digits)

2151*2^412042-1 (124041 digits)

After a long work haitus on my part, I'm back at it. I'll try to update the progress on all my reserved candidates later this weekend. In the mean time ....

6119*2^1011416-1 (304471 digits) is prime!

[B]SB2[/B]

Nice low weight prime! Congrats.

9613*2^464439-1 (139815 digits)

209*2^675232-1 (203268 digits)
209*2^692692-1 (208524 digits)

11025*2^372717-1 (112204 digits)

53*2^582078-1 (175225 digits)
5077*2^881829-1 (265461 digits)

1515*2^996848-1 (300085 digits)

good decision
 

after finding 2 primes for k=209 and changing to k=297 only testing about 80 n over night here is another prime:
297*2^583464-1 (175643 digits) (actual llr at 584k)

Congrats to all of you on nice, large primes! :cool:

[Recently I appear in this thread only to congratulate the others on their primes... :w00t:]

We are waiting for your k=7 prime :wink:

Finally a prime, from the 5th Drive, submitted together with BlisteringSheep:

129*2^690893-1 is prime! (207982 digits)

I'm also waiting for the next k=7 prime, for more than 3 years now! Currently approaching 1.95M.

Congrats to Sheep-- I'm happy to see him get credit on top 5000 for all the sieve work he's done for us.
My big sieve is done to 105T now because of him, and I'm starting my megabit hunt this week. It took me 5 months to sieve to 27T, Sheep 5 weeks to do the other 78T. I am both envious and thankful. When I find a megabit, Sheep gets half credit.
-Curtis

9613*2^636159-1 (191507 digits)

Actually I was hoping to find some prime for this k near n=2M, but what the hell :wink:
864316301*2^1055106-1 (317628 digits)

2073*2^421538-1 (126899 digits)

From the 5th drive:

117*2^697458-1 (209958 digits)

199*2^531357-1 (159957 digits)

k=861 missing primes
 

In looking for heavy-weight k's < 2145 to test, I found k=741 and k=861 that stood out. Unfortunately k=741 is reserved (great k Karsten!) :smile: and k=861 has already been tested deeply. In doing so, I checked the top-5000 site for k=861 and found the following primes that are missing from our summary site:

861*2^70689-1 found 8/2000
861*2^630463-1 found 9/2006
861*2^645393-1 found 9/2006

Unfortunately it's not clear how high this k has been tested.


Gary

405*2^445231-1 is prime. (134xxx digits)
-curtis

From the 5th drive
267*2^705028-1 (212238 digits)

85*2^1034069-1 (311288 digits)

Note that 1034069 is also prime!

:kosmaj:

Congrats Kosmaj!
Soon there will be no place for non-megabit primes in our Top-10 :tu:

Hey - congrats!!!

Thanks! This is only my second Top-5000 prime in more than 2 months since mid-May.

BTW, Cruelty, you have been rocking recently, with one megabit prime and two at the 900k level! :shock:

From the 5th drive

57*2^707245-1 (212904 digits)

Carlos

Also from the 5th drive:

213*2^709727-1 (213652 digits)

Carlos and Dave,

Congrats on nice primes!:cool:

736320585*2^753905-1 (226957 digits) - finally a prime for this high-weight "k" :cool:

199*2^541753-1 (163087 digits)

45*2^818648-1 is prime. (246440 digits)
-Curtis

52654604145*2^427263-1 (128630 digits)

199*2^581119-1 (174937 digits)

199*2^548533-1 (165128 digits) :shock: so far it is 4-th prime for k=199 and range 500000<n<600000...

199*2^560987-1 (168877 digits) :popcorn:

Wow!!! Awesome. :shock: