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-   Riesel Prime Search (https://www.mersenneforum.org/forumdisplay.php?f=59)
-   -   17*2^n-1 (https://www.mersenneforum.org/showthread.php?t=5813)

amphoria 2010-08-09 17:16
Taking 2590-2600.

PS There are 66079 candidates remaining from n=2.6M to n=4.0M.

Retep 2010-08-09 20:07
I calculated with a sieve limit at 200T and 66079 candidates at n=3.3M for a rough guess:

There is a chance of 18.4 percent that there is no prime at all in this range.

amphoria 2010-08-09 22:12
[QUOTE=Retep;224631]There is a chance of 18.4 percent that there is no prime at all in this range.[/QUOTE]

However I wonder what the probability is of no prime between n=605k and n=4.0M?

Retep 2010-08-10 18:09
.
 
[quote=amphoria;224665]However I wonder what the probability is of no prime between n=605k and n=4.0M?[/quote]

Possibly an extremely low probability.. however I think we should give it a try :smile:

unconnected 2010-08-23 16:39
2400-2416 and 2480-2500 completed, reserving 2600-2620.

Retep 2010-09-05 23:05
I would soon like to reserve another range of 40k or more.

(At the moment only 2620-2640 available)

amphoria 2010-09-06 18:28
2590-2600 complete, no primes.

Kosmaj 2010-09-06 22:19
More test files added, up to 2700k.

Happy hunting!

unconnected 2010-09-11 16:03
2600-2620 completed, taking 2620-2650.

lsoule 2010-09-11 19:16
Taking 2650-2655

Retep 2010-09-13 16:39
1 Attachment(s)
2550-2590 finished, no primes (file attached).

Taking 2655-2695.


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