2 526 631 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
214550612359758189325817	24	77.5	2014-03-17 06:53:44

ECM

Digits	B1	Curves
25	50000	66 / 280

Estimated T-Level: 21.2 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Eric Prestemon	57DFAA0DE91763A6	0
Verified (Factored)	1999-09-07	David Allen	57DFAA0DE91763A6	2066541

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-14	Oliver Kruse	8DDECAC0D7EF26F8	1	370985	5	3
Verified	2017-12-01	kkmrkkblmbrbk	8DDECAC0D7EF26F8	1	2101096	5	3

History

Date	User	Type	Result
2023-01-28	USAFSS	NF-PM1	B1=288000, B2=290589390
2022-03-10	LordJulius	NF	no factor from 2^1 to 2^60
2017-12-01	kkmrkkblmbrbk	C-PRP	M2526631/214550612359758189325817 : 8DDECAC0D7EF26F8 PRP: Verified PRP without proof (not generated)
2017-10-14	Oliver Kruse	C-PRP	M2526631/214550612359758189325817 : 8DDECAC0D7EF26F8 PRP: Verified PRP without proof (not generated)
2014-03-17	bam	F-ECM	Factor: 214550612359758189325817
2013-11-29	lycorn	NF	no factor from 2^62 to 2^63
2012-06-14	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-03-14	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-06	Joss	NF-PM1	B1=50000
2011-01-02	Joss	NF-PM1	B1=30000
2010-12-19	Joss	NF-PM1	B1=20000
2009-03-31	Rob_Dee	NF	no factor from 2^60 to 2^61