1 959 197 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
27428759	8	24.7	old
85687439993	11	36.3	2008-07-15 07:48:42
18064658386681	14	44.0	2014-01-10 14:40:36
5070924667212676471201	22	72.1	2021-01-20 16:12:38
7461316976005232352796227127	28	92.6	2022-05-26 10:17:16

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	DE2029E9E9FF4954	3	0	1	3
Verified (Factored)	2017-11-11	kkmrkkblmbrbk	DE2029E9E9FF4954	3	1780505	1	3
Verified (Factored)	2021-01-20	mrh	2052B647FBF2D1AA	4	1158769	5	3
Verified	2022-05-29	SRJ2877	2052B647FBF2D1AA	5	943427	5	3

History

Date	User	Type	Result
2022-05-29	yphysics	CERT	PRP Certification Proof certified good
2022-05-29	SRJ2877	C-PRP	M1959197/27428759/85687439993/18064658386681/5070924667212676471201/7461316976005232352796227127 : 2052B647FBF2D1AA PRP proof power = 7 PRP: Verified Proof certified good
2022-05-26	TJAOI	F-ECM	Factor: 7461316976005232352796227127 / (ECM curve 165, B1=50000, B2=7500000)
2021-01-20	Franklin Webber	CERT	PRP Certification Proof certified good
2021-01-20	mrh	C-PRP	M1959197/27428759/85687439993/18064658386681/5070924667212676471201 : 2052B647FBF2D1AA PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2021-01-20	_p95holder_	F-ECM	Factor: 5070924667212676471201 / (ECM curve 7, B1=50000, B2=5000000)
2017-11-11	kkmrkkblmbrbk	C-PRP	M1959197/27428759/85687439993/18064658386681 : DE2029E9E9FF4954 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-05	Oliver Kruse	C-PRP	M1959197/27428759/85687439993/18064658386681 : DE2029E9E9FF4954 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-01-10	TJAOI	F	Factor: 18064658386681
2008-07-15	J Feitsma	F	Factor: 85687439993