1 954 691 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
15637529	8	23.9	old
879610951	9	29.7	2008-07-15 07:48:39
4694535071979593	16	52.1	2014-07-24 11:43:32
426556426399609689377	21	68.5	2021-10-16 02:33:15

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 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	71F627A322D3DC73	3	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	71F627A322D3DC73	3	1171078	1	3
Verified	2021-10-17	_p95holder_	DCA1912A03672369	4	1127540	5	3
Verified	2021-10-21	ATH	DCA1912A03672369	4	1779887	5	3

History

Date	User	Type	Result
2021-10-21	Ben Delo	CERT	PRP Certification Proof certified good
2021-10-21	ATH	C-PRP	M1954691/15637529/879610951/4694535071979593/426556426399609689377 : DCA1912A03672369 PRP proof power = 7 PRP: Verified Proof certified good
2021-10-17	_p95holder_	C-PRP	M1954691/15637529/879610951/4694535071979593/426556426399609689377 : DCA1912A03672369 PRP: Verified PRP without proof (not generated)
2021-10-16	_p95holder_	F-ECM	Factor: 426556426399609689377 / (ECM curve 6, B1=50000, B2=5000000)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1954691/15637529/879610951/4694535071979593 : 71F627A322D3DC73 PRP: Verified PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1954691/15637529/879610951/4694535071979593 : 71F627A322D3DC73 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-07-24	TJAOI	F	Factor: 4694535071979593
2008-07-15	J Feitsma	F	Factor: 879610951