15*2^n-1, n>1M Reservation Thread - Page 51

AES · 2011-07-08, 03:24

2290 to 2293 complete, no primes.

Taking 2305 to 2308.

lsoule · 2011-07-08, 18:08

2299-2305 complete, no primes.
Taking 2308-2320.

Thomas11 · 2011-07-09, 09:32

Taking 2320-2326.

lsoule · 2011-07-09, 13:56

2308-2320 complete, no primes.
Taking 2326-2338

Thomas11 · 2011-07-11, 08:48

2275-2290 complete, no primes.
2320-2326 complete, one prime (15*2^2323205-1)

Thomas11 · 2011-07-11, 11:17

According to http://www.15k.org/RPSotherRanges.html, the range n=2,340,000-2,358,000 has already been tested (by Peter?).

Can someone confirm this?
Shall we skip this range or double check?

Kosmaj · 2011-07-11, 11:48

Not Peter, Dave did those tests, and also k=17 in the vicinity of n.

Dave, can you confirm?

Thomas, can you test only 2338-2340 and I'll release new files starting from 2358k shortly. Sorry about this!

Kosmaj · 2011-07-11, 11:53

And CONGRATS on that nice prime, 15*2^2323205-1, just a few digits shy of 700k digits!!
Ranked 71 among all known primes. Very nice!

The previous k=15 prime was found in December 2008, more than 2 and a half years ago!

Thomas11 · 2011-07-11, 12:01

Quote:

Originally Posted by Kosmaj

And CONGRATS on that nice prime, 15*2^2323205-1, just a few digits shy of 700k digits!!
Ranked 71 among all known primes. Very nice!

The previous k=15 prime was found in December 2008, more than 2 and a half years ago!

Thanks!
I just noticed the coincidence of the many 11's in this found:
My user name, the date (day) and the year...

Taking 2338-2340.

amphoria · 2011-07-11, 16:10

Quote:

Originally Posted by Kosmaj

Not Peter, Dave did those tests, and also k=17 in the vicinity of n.

Dave, can you confirm?

Thomas, can you test only 2338-2340 and I'll release new files starting from 2358k shortly. Sorry about this!

I confirm. I also did 2920-2931. The results are attached.

lsoule · 2011-07-11, 16:14

2326-2338 complete, no primes.

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2011-07-08, 18:08	#552
lsoule Nov 2004 California 6A8₁₆ Posts	2299-2305 complete, no primes. Taking 2308-2320.

2011-07-09, 09:32	#553
Thomas11 Feb 2003 2²·3²·53 Posts	Taking 2320-2326.

2011-07-09, 13:56	#554
lsoule Nov 2004 California 3250₈ Posts	2308-2320 complete, no primes. Taking 2326-2338

2011-07-11, 08:48	#555
Thomas11 Feb 2003 2²·3²·53 Posts	2275-2290 complete, no primes. 2320-2326 complete, one prime (15*2^2323205-1)

2011-07-11, 11:17	#556
Thomas11 Feb 2003 11101110100₂ Posts	According to http://www.15k.org/RPSotherRanges.html, the range n=2,340,000-2,358,000 has already been tested (by Peter?). Can someone confirm this? Shall we skip this range or double check?

2011-07-11, 11:48	#557
Kosmaj Nov 2003 2×1,811 Posts	Not Peter, Dave did those tests, and also k=17 in the vicinity of n. Dave, can you confirm? Thomas, can you test only 2338-2340 and I'll release new files starting from 2358k shortly. Sorry about this!

2011-07-11, 11:53	#558
Kosmaj Nov 2003 2×1,811 Posts	And CONGRATS on that nice prime, 15*2^2323205-1, just a few digits shy of 700k digits!! Ranked 71 among all known primes. Very nice! The previous k=15 prime was found in December 2008, more than 2 and a half years ago!

2011-07-11, 16:14	#561
lsoule Nov 2004 California 2³·3·71 Posts	2326-2338 complete, no primes.