4 254 763 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
2575678132901731989127210010033	31	101.0	2013-02-18 14:57:52

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)	1998-06-20	Michael Jorgensen	093C8ADC5A225E86	0
Verified (Factored)	2000-11-25	Alexey Guzeev	093C8ADC5A225E86	4087364

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-20	kkmrkkblmbrbk	CDA38EB36C50DA00	1	0	1	3
Verified	2018-01-22	ATH	CDA38EB36C50DA00	1	2139546	1	3

History

Date	User	Type	Result
2023-03-09	USAFSS	NF-PM1	B1=224000, B2=119776800
2018-01-22	ATH	C-PRP	M4254763/2575678132901731989127210010033 : CDA38EB36C50DA00 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4254763/2575678132901731989127210010033 : CDA38EB36C50DA00 PRP: Verified PRP without proof (not generated)
2013-02-18	Xyzzy	F-ECM	Factor: 2575678132901731989127210010033
2012-01-31	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-01-06	markr	NF	no factor from 2^61 to 2^62