394 987 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
133620945279573634091464647967	30	96.8	2015-11-03 06:08:52

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	200 / 640

Estimated T-Level: 26.6 ⓘ

TF below 2^83 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		John Sweeney	E46	0
Verified (Factored)		David Slowinski	E46	0
Verified (Factored)		Guillermo Ballester Valor	27AA9F3BE31E8E46	0
Verified (Factored)		Eivind Triel	27AA9F3BE31E8E46	5341
Verified (Factored)	2001-12-22	Dennis Pope	27AA9F3BE31E8E46	357442

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-23	Oliver Kruse	6DF517715145BE4B	1	0	1	3
Verified	2017-09-24	Oliver Kruse	6DF517715145BE4B	1	0	1	3
Verified	2017-11-07	kkmrkkblmbrbk	6DF517715145BE4B	1	348437	1	3
Unverified (Reliable)	2020-04-18	Oliver Kruse	09B51D3122F742__	1	145751	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2020-04-18	Oliver Kruse	C-PRP	M394987/133620945279573634091464647967 : 09B51D3122F742__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-11-07	kkmrkkblmbrbk	C-PRP	M394987/133620945279573634091464647967 : 6DF517715145BE4B PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-24	Oliver Kruse	C-PRP	M394987/133620945279573634091464647967 : 6DF517715145BE4B PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-23	Oliver Kruse	C-PRP	M394987/133620945279573634091464647967 : 6DF517715145BE4B PRP: Unverified (Reliable) PRP without proof (not generated)
2015-11-03	bam	F-ECM	Factor: 133620945279573634091464647967 / (ECM curve 3, B1=250000, B2=25000000)
2015-08-25	NR	NF	no factor from 2^61 to 2^62
2012-07-20	alpertron	NF-PM1	B1=10000000, B2=200000000, E=12
2011-11-12	lycorn	NF	no factor from 2^60 to 2^61
2009-01-27	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-05	Sturle Sunde	NF	no factor from 2^58 to 2^59