M1915757 Mersenne number exponent details

	Trial Factoring	P-1 Factoring	Combined
Limit	GHz-days	Probability	B1	B2	GHz-days	Probability	GHz-days	Probability	Prob over default TF
Actual	2⁶⁸	31.1130	69.1176%	8000000	320000000	1.9665	9.7378%	33.0794	72.1249%	3.0073%
PrimeNet	2⁵⁷	0.0100	63.1579%	9000	170000	0.0014	3.0916%	0.0114	64.2969%	1.1390%
GPU72	2⁶¹	0.1603	65.5738%	10000	170000	0.0015	1.7608%	0.1618	66.1799%	0.6062%
Difference	+7	+30.9526	+3.5439%	+7990000	+319830000	+1.9650	+7.9770%	+32.9176	+5.9450%	+5.9450%

	GHz-Days	worth	Factor probability
date	userid	compid	b1	b2	e	stage	factor	digits	bits*	spent	saved
2011-08-16T05:13:00	kurly	slice	1000000	30000000		-		-	-	0.203	-	-	5.684%
2017-12-18T09:42:03	mikr	S063	8000000	320000000	12	-		-	-	1.966	-	-	9.738%

Trial Factoring results:

			Bits		Factor			GHz-Days		worth
date	userid	compid	from	to	factor	bits*	digits	spent	saved	worth
2016-02-23T16:28:58	Mark Rose	Manual testing	2¹	2⁶⁰		-	-	0.080	-	-
2009-05-31T11:15:00	Architects Cubed	i4l_1	2⁶⁰	2⁶¹		-	-	0.080	-	-
2016-02-23T16:28:58	Mark Rose	Manual testing	2⁶¹	2⁶²		-	-	0.160	-	-
2011-07-17T18:55:00	GrunwalderGIMP	Manual testing	2¹	2⁶³		-	-	0.833	-	-
2016-02-23T16:28:58	Mark Rose	Manual testing	2⁶²	2⁶³		-	-	0.512	-	-
2015-05-16T20:58:00	snme2pm1	Manual testing	2⁶³	2⁶⁴		-	-	1.025	-	-
2015-05-16T20:58:00	snme2pm1	Manual testing	2⁶⁴	2⁶⁵		-	-	1.950	-	-
2015-10-13T10:54:06	ramgeis	Manual testing	2⁶⁵	2⁶⁶		-	-	3.901	-	-
2017-03-15T08:26:29	Smok_bmv	Manual testing	2⁶⁶	2⁶⁷		-	-	7.801	-	-
2019-04-28T00:32:12	chuenkit	Manual testing	2⁶⁷	2⁶⁸		-	-	15.60	-	-

ECM factoring results:

Old Calculation Method

Total ECM effort:	18.180 GHz-days
Estimated T-Level:	24.482

Digits	B1	Curves	Complete	FacMiss
20	11000	251 / 100	2.510	8.025%
25	50000	251 / 280	0.896	40.737%

New Calculation Method

Total ECM effort:	18.180 GHz-days
Estimated T-Level:	24.482

Digits	B1	Complete	FacMiss
20	11000	9.885	0.005%
25	50000	0.922	39.769%
30	250000	0.058	94.326%
35	1000000	0.003	99.727%

ECM Summary

B1	B2	curves	GHz-days
50000	5000000	200	13.89
50000	5450000	7	0.504
50000	8000000	44	3.790

ECM Details

										GHz-Days
date	userid	compid	b1	b2	factor	bits*	curve#	stage#	sigma	numcurves	spent
2008-11-07T16:54:00	Jorge Flora	PC_01b	50000	5000000						3	0.208
2009-08-01T09:49:00	SubPrime	abd1	50000	5000000						3	0.208
2010-12-04T16:53:00	Lupo	yorick	50000	5000000						3	0.208
2012-11-05T12:21:00	OS1	L3	50000	5000000						3	0.208
2013-11-27T07:04:00	Andy Incline	Office-PC	50000	5000000						3	0.208
2014-12-09T00:51:00	Chris Smith	starcraft2	50000	5000000						3	0.208
2015-09-07T18:42:00	Sara	Sara	50000	5000000						3	0.208
2016-04-16T04:55:35	Jason U	Server7	50000	5000000						3	0.208
2016-06-16T11:47:12	lettp	Home	50000	5000000						3	0.208
2016-08-29T10:08:53	Bruce	test	50000	5000000						3	0.208
2017-02-05T17:39:16	Bruce	Desk6	50000	5000000						3	0.208
2017-07-30T21:15:03	Bruce	Desk6	50000	5000000						3	0.208
2017-12-14T23:10:10	Lelikoid	QH	50000	5000000						3	0.208
2018-04-15T10:38:06	Bruce	Desk6	50000	5000000						3	0.208
2018-09-24T07:31:04	Bruce	Desk6	50000	5000000						3	0.208
2019-11-29T05:32:00	IanGlencross	glenx24	50000	5000000						3	0.208
2019-12-03T17:57:31	cappy95833	HomePC	50000	5000000						3	0.208
2019-12-06T11:39:03	daveward2005	Davy	50000	5000000						3	0.208
2019-12-11T02:38:25	Keysarecool	HPLaptop	50000	5000000						3	0.208
2019-12-15T22:06:15	Keysarecool	HPLaptop	50000	5000000						3	0.208
2019-12-20T21:57:49	George Woltman	colab	50000	5000000						3	0.208
2019-12-27T19:06:11	MarkS	desktop-i7	50000	5000000						3	0.208
2020-01-01T02:24:34	TheJudger	myECM	50000	5000000						3	0.208
2020-01-06T20:11:40	IanGlencross	glenx24	50000	5000000						3	0.208
2020-01-14T20:39:22	EricP	Cannonfodder	50000	5000000						3	0.208
2020-01-21T16:05:12	mnd9	colab	50000	5000000						3	0.208
2020-01-27T18:20:39	mnd9	kitchen	50000	5000000						3	0.208
2020-02-05T10:48:12	Keysarecool	Boat_Anchor	50000	5000000						3	0.208
2020-02-13T04:19:31	mnd9	colab2	50000	5000000						3	0.208
2020-02-20T18:46:58	Chang Chia-Tche	ex-ctcpc	50000	5000000						3	0.208
2020-02-27T03:18:15	mnd9	l2lounge	50000	5000000						3	0.208
2020-03-05T04:20:20	MarkS	desktop-i7	50000	5000000						3	0.208
2020-03-12T04:23:24	mnd9	25836b	50000	5000000						3	0.208
2020-03-20T17:31:10	mnd9	colab	50000	5000000						3	0.208
2020-03-31T16:27:07	cappy95833	HomePC	50000	5000000						3	0.208
2020-04-13T04:58:09	mnd9	eileen	50000	5000000						3	0.208
2020-04-23T22:58:39	mnd9	eileen	50000	5000000						3	0.208
2020-05-01T21:33:42	nranks	wlaptop	50000	5000000						3	0.208
2020-05-13T05:34:24	nordi	sweet16	50000	5000000						3	0.208
2020-05-29T01:37:15	Keysarecool	HPLaptop	50000	5000000						3	0.208
2020-06-16T21:57:12	daveward2005	Davy	50000	5000000						3	0.208
2020-07-04T22:33:57	nordi	sweet16	50000	5000000						3	0.208
2020-07-06T14:12:36	GAN	OSB-02	50000	5000000						3	0.208
2020-07-13T09:33:11	GAN	XPS	50000	5000000						3	0.208
2020-07-18T23:19:30	GAN	LMS-15	50000	5000000						3	0.208
2020-07-25T04:23:04	GAN	LMS-11	50000	5000000						3	0.208
2020-08-01T07:28:50	GAN	LMS-13	50000	5000000						3	0.208
2020-08-09T01:06:08	GAN	LMS-18	50000	5000000						3	0.208
2020-08-23T13:03:35	LaurV	debilis	50000	5000000						7	0.486
2020-09-22T14:35:57	Gerry Snyder	Gerry-Workstation	50000	5000000						7	0.486
2020-10-20T11:02:11	J.R. Allen	lapasus	50000	5000000						7	0.486
2020-11-24T01:13:19	daveward2005	Dave2	50000	5000000						7	0.486
2020-12-30T00:34:49	Zenzoma	AMD3970X	50000	5000000						7	0.486
2021-01-07T02:47:24	Cork	Manual testing	50000	5000000						7	0.486
2021-02-27T19:19:45	Zenzoma	AMD3970X	50000	5000000						7	0.486
2021-04-03T17:45:20	Zenzoma	AMD3970X	50000	5000000						7	0.486
2021-05-21T17:53:16	kutens	vega	50000	5450000						7	0.504
2022-01-18T14:10:46	TJAOI	Manual testing	50000	8000000						44	3.790

0M	<	10¹⁰	All tracked exponents
0M	<	2³²	GPU TF range
0M	<	1000M	PrimeNet range
0M	<	193M	low-PrimeNet, low-res
0M	<	385M	low-PrimeNet, high-res
50M	<	146M	PrimeNet wavefront

date	userid	compid	res64	spent (GHz-days)
1999-01-02T00:00:00	Stephen Wood	v4_computers	B607D85F648B1AFC	0.104
2015-07-06T20:15:00	MadPoo	Manual testing	B607D85F648B1AFC	0.104