Reset the milestone counter: New SoB & PSP was found !!

Aillas · 2016-11-06, 17:43

It seems we can reset the milestone counter, for both PSP & SoB as it's a shared k:

PrimeGrid unofficial announcement

So if the verification has started on Halloween, we can assume the date for the hit is 31 October 2016.

Last Prime for SoB: 17 October 2007
Last Prime for PSP: 19 June 2010

SoB: Number of days since last prime: 3303 days or 9 years, 15 days
PSP: Number of days since last prime: 2327 days or 6 years, 4 months, 13 days

Almost an anniversary day for SoB

Batalov · 2016-11-06, 18:46

Looks legit so far.

It's a pity they have no clue how to properly check for Fermat divisibility ("The Fermat divisor test will take a month and a half on a Haswell", they say)... but then again, does it matter? It most likely doesn't divide F, GF and even small xGFs.

paulunderwood · 2016-11-06, 18:46

Congrats to all involved with this new prime, especially Szabolcs Péter.

rudy235 · 2016-11-07, 00:40

Yes a really big prime! It qualifies as a Colbert Number http://mathworld.wolfram.com/ColbertNumber.html

The largest up to date, actually

Prime95 · 2016-11-08, 04:24

Bravo!! Nine years between prime finds - congrats to all that stayed with it through the lean years!

2016-11-06, 17:43	#1
Aillas Oct 2002 France 3×43 Posts	Reset the milestone counter: New SoB & PSP was found !! It seems we can reset the milestone counter, for both PSP & SoB as it's a shared k: PrimeGrid unofficial announcement So if the verification has started on Halloween, we can assume the date for the hit is 31 October 2016. Last Prime for SoB: 17 October 2007 Last Prime for PSP: 19 June 2010 SoB: Number of days since last prime: 3303 days or 9 years, 15 days PSP: Number of days since last prime: 2327 days or 6 years, 4 months, 13 days Almost an anniversary day for SoB

2016-11-07, 00:40	#4
rudy235 Jun 2015 Vallejo, CA/. 2×5×97 Posts	Yes a really big prime! It qualifies as a Colbert Number http://mathworld.wolfram.com/ColbertNumber.html The largest up to date, actually Last fiddled with by Batalov on 2016-11-07 at 01:21 Reason: (fixed the URL)

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2016-11-06, 18:46	#2
Batalov "Serge" Mar 2008 Phi(4,2^7658614+1)/2 2·3·1,543 Posts	Looks legit so far. It's a pity they have no clue how to properly check for Fermat divisibility ("The Fermat divisor test will take a month and a half on a Haswell", they say)... but then again, does it matter? It most likely doesn't divide F, GF and even small xGFs.

2016-11-06, 18:46	#3
paulunderwood Sep 2002 Database er0rr 2×5×353 Posts	Congrats to all involved with this new prime, especially Szabolcs Péter.

2016-11-08, 04:24	#5
Prime95 P90 years forever! Aug 2002 Yeehaw, FL 2×41×89 Posts	Bravo!! Nine years between prime finds - congrats to all that stayed with it through the lean years!