2 171 341 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
99881687	8	26.6	old
12571069915823	14	43.5	2008-09-30 14:36:36
8102037839435770403087	22	72.8	2023-08-15 07:11:23

ECM

Digits	B1	Curves
25	50000	101 / 280

Estimated T-Level: 21.8 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-09	kkmrkkblmbrbk	E52A1FBA5804AA16	2	0	1	3
Verified (Factored)	2017-10-22	Oliver Kruse	E52A1FBA5804AA16	2	285891	1	3
Verified	2023-08-20	Perig	3DA74D1952549C38	3	836578	5	3

History

Date	User	Type	Result
2023-08-20	junkman2usa	CERT	PRP Certification Proof certified good
2023-08-20	Perig	C-PRP	M2171341/99881687/12571069915823/8102037839435770403087 : 3DA74D1952549C38 PRP proof power = 7 PRP: Verified Proof certified good
2023-08-15	Sergei Kozelko	F-ECM	Factor: 8102037839435770403087 / (ECM curve 2, B1=50000, B2=6350000, Sigma=4527323507547269)
2017-10-22	Oliver Kruse	C-PRP	M2171341/99881687/12571069915823 : E52A1FBA5804AA16 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-09	kkmrkkblmbrbk	C-PRP	M2171341/99881687/12571069915823 : E52A1FBA5804AA16 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-09-30	markr	F	Factor: 12571069915823