2 915 509 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
23787527958997624079	20	64.4	2009-03-28 11:52:06

ECM

Digits	B1	Curves
25	50000	4 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Dax Prather	20DC00A3C3C6FF71	0
Verified (Factored)	1998-07-05	Brian Gaboury	20DC00A3C3C6FF71	0
Verified (Factored)	1999-08-16	Jörg Thomsen	20DC00A3C3C6FF71	2375706

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-24	Oliver Kruse	A9A45CA30AFCDB30	1	2400526	5	3
Verified	2017-12-08	kkmrkkblmbrbk	A9A45CA30AFCDB30	1	1075319	5	3

History

Date	User	Type	Result
2023-02-07	USAFSS	NF-PM1	B1=360000, B2=282695490
2022-03-10	LordJulius	NF	no factor from 2^1 to 2^60
2017-12-08	kkmrkkblmbrbk	C-PRP	M2915509/23787527958997624079 : A9A45CA30AFCDB30 PRP: Verified PRP without proof (not generated)
2017-10-24	Oliver Kruse	C-PRP	M2915509/23787527958997624079 : A9A45CA30AFCDB30 PRP: Verified PRP without proof (not generated)
2009-03-28	Aca Arsov	F-ECM	Factor: 23787527958997624079
2009-02-12	Sturle Sunde	NF	no factor from 2^60 to 2^61