2 128 051 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
61172954047	11	35.8	old
674149532393	12	39.3	2008-07-14 20:20:39
38020333444924277849	20	65.0	2018-05-08 13:09:54

ECM

Digits	B1	Curves
25	50000	90 / 280

Estimated T-Level: 21.6 ⓘ

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)	2017-10-08	Oliver Kruse	81D637D327191150	2	0	1	3
Verified (Factored)	2017-11-17	kkmrkkblmbrbk	81D637D327191150	2	1413580	1	3
Verified	2018-05-08	_p95holder_	810128505798A89C	3	1584317	5	3
Verified	2018-05-09	kkmrkkblmbrbk	810128505798A89C	3	2091169	5	3

History

Date	User	Type	Result
2018-05-09	kkmrkkblmbrbk	C-PRP	M2128051/61172954047/674149532393/38020333444924277849 : 810128505798A89C PRP: Verified PRP without proof (not generated)
2018-05-08	_p95holder_	C-PRP	M2128051/61172954047/674149532393/38020333444924277849 : 810128505798A89C PRP: Verified PRP without proof (not generated)
2018-05-08	TJAOI	F	Factor: 38020333444924277849 / TF: 65-66
2017-11-17	kkmrkkblmbrbk	C-PRP	M2128051/61172954047/674149532393 : 81D637D327191150 PRP: Verified PRP without proof (not generated)
2017-10-08	Oliver Kruse	C-PRP	M2128051/61172954047/674149532393 : 81D637D327191150 PRP: Verified PRP without proof (not generated)
2016-03-15	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-07-14	George Woltman	F-ECM	Factor: 674149532393