Status from CRUS-work.

[MisterBitcoin]

This blog is about my status on some bases for CRUS.
The following bases and reservations will be updated

S212 k64
S428
S797
S917

BTW: S522 is @>9200.

[gd_barnes]

Originally Posted by MisterBitcoin

This blog is about my status on some bases for CRUS.
The following bases and reservations will be updated

S212 k64
S428
S797
S917

BTW: S522 is @>9200.

This should be posted in the CRUS forum.

[MisterBitcoin]

Originally Posted by gd_barnes

This should be posted in the CRUS forum.

I would post every 2 days here with tiny upgrades, e.g.

S917: 15/2403 tests done

Updates on the reservation thread(s) will be every 1-2 months.

[MisterBitcoin]

Server list:

Strato #1 (Linux): Sieving only
Strato #2 (Windows): PRP-tests
VM-Cluster/ESX (Linux/about 1TFLOPs): Sieving only

Plus Notebook and "Tower".

[MisterBitcoin]

My monthly goals for February aren´t reached, but there very close.
After some problems with newpgen and srbsieve on my Windows Server (e.g. DEP) its now finely working!
I´m planning to start 2 more srbsieve-threads after my S428 reservation is over.
Taking a S3 Range need a lot of time, after 24 hrs I´m at 9,5% from step 2.
One Range will be take ~2 months.

The best think is still the megaprime. :)

[MisterBitcoin]

March 2017 was an good month.
2 new sierp bases tested to n=10K.


Even the begining from april seem good:
S3-Range passed n=17K, 19,000 k´s remain
My new reservation S393 runs fine, just a few minutes ago the fist prime. EDIT: Only 20 hrs later I found two new primes!

30018*393^35451+1 is prime! (91979 decimal digits)
21078*393^36867+1 is prime! (95652 decimal digits)  Time : 48.150 sec.
 15530*393^35657+1 is prime! (92513 decimal digits)  Time : 37.924 sec

[MisterBitcoin]

Once more a data transfer.

[MisterBitcoin]

srbsieve full pack

(srsieve+newpgen+open PFGW)

[MisterBitcoin]

Not actually related to CRUS, but still interesting:


Primes for form 172*3^n+1

"0"
2
4
22
25
34
 44
49

 54
57
114
142
265
328
360
453
520
764
1070
2200
3424

12614

These are all primes n<25000.
Going deeper, at some point.

Thank you Karsten for missed prime at n=49, now fixed.

[kar_bon]

Missed prime at n=49.

[LaurV]

Originally Posted by MisterBitcoin

Not actually related to CRUS, but still interesting:
Primes for form 172*3^n+1
These are all primes n<25000.
Not going deeper, atm.

I still don't get it what is interesting about primes that can be found in less than half hour of pari/gp one-liner run? [/end of Sat_morning_grumpy_because_not_yet_coffee]

gp > for(n=1,50000,if(isprime(172*3^n+1),print("prime for: "n),printf("...%d...%c",n,13)))
prime for: 2
prime for: 4
prime for: 22
prime for: 25
prime for: 34
prime for: 44
prime for: 49
prime for: 54
prime for: 57
prime for: 114
prime for: 142
prime for: 265
prime for: 328
prime for: 360
prime for: 453
prime for: 520
prime for: 764
prime for: 1070
prime for: 2200
prime for: 3424
...3709...
  ***   at top-level: for(n=1,50000,if(isprime(172*3^n+1),p
  ***                                  ^--------------------
  *** isprime: user interrupt after 1min, 31,719 ms
  ***   Break loop: <Return> to continue; 'break' to go back to GP prompt
break>

(this is a slow laptop, which is factoring aliquotes in parallel, and yes, I understand that it gets slower and slower as it comes to higher n, without any sieving, but please come back with some 400k+ digits primes of this form, and then we talk...)


Going for that coffee... the machine is beeping...