1 927 963 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
65550743	8	26.0	old
528261863	9	29.0	2008-07-15 07:48:19
5324821730071	13	42.3	2008-07-15 07:48:20
42163510337080813159	20	65.2	2018-07-18 10:28:31

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-05	Oliver Kruse	081CF0A1AD692290	3	0	1	3
Verified (Factored)	2017-11-10	ATH	081CF0A1AD692290	3	1163753	1	3
Verified	2018-07-20	_p95holder_	A571554B6B25CCFD	4	1416057	5	3
Verified	2018-07-20	francijezek	A571554B6B25CCFD	4	368003	5	3
Verified	2018-07-21	Martin Russell	A571554B6B25CCFD	4	1470367	5	3

History

Date	User	Type	Result
2018-07-21	Martin Russell	C-PRP	M1927963/65550743/528261863/5324821730071/42163510337080813159 : A571554B6B25CCFD PRP: Verified PRP without proof (not generated)
2018-07-20	francijezek	C-PRP	M1927963/65550743/528261863/5324821730071/42163510337080813159 : A571554B6B25CCFD PRP: Verified PRP without proof (not generated)
2018-07-20	_p95holder_	C-PRP	M1927963/65550743/528261863/5324821730071/42163510337080813159 : A571554B6B25CCFD PRP: Verified PRP without proof (not generated)
2018-07-18	TJAOI	F	Factor: 42163510337080813159 / TF: 65-66
2017-11-10	ATH	C-PRP	M1927963/65550743/528261863/5324821730071 : 081CF0A1AD692290 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1927963/65550743/528261863/5324821730071 : 081CF0A1AD692290 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-07-15	J Feitsma	F	Factor: 5324821730071
2008-07-15	J Feitsma	F	Factor: 528261863