2 155 103 Exponent Status

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
4087636666846975322642297	25	81.8	2020-04-22 06:48:11

ECM

Digits	B1	Curves
25	50000	74 / 280

Estimated T-Level: 21.3 ⓘ

TF below 2^66 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Steffen Haugk	36FFA09B5EAF3EA9	0
Verified (Factored)	1999-02-07	David Phillips	36FFA09B5EAF3EA9	489700
Verified (Factored)	2018-04-09	kkmrkkblmbrbk	36FFA09B5EAF3EA9	321855

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-04-22	M Miller	6E4DE39133E79FB8	1	1802513	5	3
Verified	2020-04-22	ATH	6E4DE39133E79FB8	1	1867497	5	3

History

Date	User	Type	Result
2020-04-22	ATH	C-PRP	M2155103/4087636666846975322642297 : 6E4DE39133E79FB8 PRP: Verified PRP without proof (not generated)
2020-04-22	M Miller	C-PRP	M2155103/4087636666846975322642297 : 6E4DE39133E79FB8 PRP: Verified PRP without proof (not generated)
2020-04-22	nordi	F-ECM	Factor: 4087636666846975322642297 / (ECM curve 2, B1=50000, B2=5000000, Sigma=2200114001617932)
2019-05-20	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-09	kkmrkkblmbrbk	C-LL	36FFA09B5EAF3EA9
2017-12-28	mikr	NF-PM1	B1=2500000, B2=125000000, E=12
2016-11-03	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-09	Joss	NF-PM1	B1=360000, B2=6480000, E=12
2016-03-22	Joss	NF-PM1	B1=269606
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-12-30	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-22	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-22	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-01	Joss	NF-PM1	B1=149782
2013-09-08	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-24	markr	NF-PM1	B1=120000, B2=2340000, E=6
2011-01-15	Joss	NF-PM1	B1=50000
2010-12-30	Joss	NF-PM1	B1=30000
2010-11-03	Joss	NF-PM1	B1=20000
2009-01-07	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-04	Sturle Sunde	NF	no factor from 2^60 to 2^61

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