208 003 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
131620825500278933393396560129	30	96.7	2010-08-27 15:46:40

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	600 / 640

Estimated T-Level: 29.7 ⓘ

TF below 2^94 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Allan Menezes	BAAB02ED582787AF	0
Verified (Factored)		Peter Marksteiner	BAAB02ED582787AF	0
Verified (Factored)		Eivind Triel	BAAB02ED582787AF	9055
Verified (Factored)	2002-12-25	Brian J. Beesley	BAAB02ED582787AF	1173

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-22	Oliver Kruse	31EE2A6FA27BC068	1	0	1	3
Verified	2017-10-12	kkmrkkblmbrbk	31EE2A6FA27BC068	1	102566	1	3
Verified	2020-04-17	Oliver Kruse	50F79AF29871BDBE	1	12665	5	3
Verified	2023-08-03	USAFSS	50F79AF29871BDBE	1	77708	5	3

History

Date	User	Type	Result
2023-08-03	kutens	CERT	PRP Certification Proof certified good
2023-08-03	USAFSS	C-PRP	M208003/131620825500278933393396560129 : 50F79AF29871BDBE PRP proof power = 5 PRP: Verified Proof certified good
2022-03-07	LordJulius	NF	no factor from 2^57 to 2^58
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2022-02-13	Oliver Kruse	NF-PM1	B1=30000000, B2=10070832992220
2021-05-12	Oliver Kruse	NF-PM1	B1=30000000, B2=3000000000
2020-04-17	Oliver Kruse	C-PRP	M208003/131620825500278933393396560129 : 50F79AF29871BDBE PRP: Verified PRP without proof (small exponent)
2017-10-12	kkmrkkblmbrbk	C-PRP	M208003/131620825500278933393396560129 : 31EE2A6FA27BC068 PRP: Verified PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M208003/131620825500278933393396560129 : 31EE2A6FA27BC068 PRP: Verified PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M208003/131620825500278933393396560129 : 31EE2A6FA27BC068 PRP without proof (not generated)
2010-08-27	Buckle	F-ECM	Factor: 131620825500278933393396560129
2010-06-08	Architects Cubed	NF	no factor from 2^60 to 2^61
2009-03-15	axn	NF-PM1	B1=5000000, B2=200000000, E=12
2009-01-24	Sturle Sunde	NF	no factor from 2^59 to 2^60
2008-12-31	Sturle Sunde	NF	no factor from 2^58 to 2^59