1 965 851 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
141541273	9	27.1	old
101972623073	12	36.6	2008-07-15 07:48:46
5091416480431	13	42.2	2008-07-15 07:48:46
26292181525352159	17	54.5	2014-11-30 12:05:40

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	56 / 640

Estimated T-Level: 25.4 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-05	Oliver Kruse	FCA2A6B2DC514C2C	4	0	1	3
Verified	2017-11-15	kkmrkkblmbrbk	FCA2A6B2DC514C2C	4	1671180	1	3

History

Date	User	Type	Result
2023-10-16	USAFSS	NF-PM1	B1=672000, B2=647447724
2022-08-12	USAFSS	NF-PM1	B1=132000, B2=134381520
2017-11-15	kkmrkkblmbrbk	C-PRP	M1965851/141541273/101972623073/5091416480431/26292181525352159 : FCA2A6B2DC514C2C PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1965851/141541273/101972623073/5091416480431/26292181525352159 : FCA2A6B2DC514C2C PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1965851/141541273/101972623073/5091416480431/26292181525352159 : FCA2A6B2DC514C2C PRP without proof (not generated)
2014-11-30	TJAOI	F	Factor: 26292181525352159 / TF: 54-55
2008-07-15	J Feitsma	F	Factor: 5091416480431
2008-07-15	J Feitsma	F	Factor: 101972623073