285 071 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
7690780432069605150246570941833	31	102.6	2016-01-12 10:18:24

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	475 / 640

Estimated T-Level: 28.7 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	39EC	0
Verified (Factored)		Unknown	39EC	0
Verified (Factored)		Brian J. Beesley	54E585220E88B9EC	0
Verified (Factored)		Eivind Triel	54E585220E88B9EC	104453
Verified (Factored)	2002-03-03	Brian J. Beesley	54E585220E88B9EC	276418

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-24	Oliver Kruse	B961524B428310BE	1	0	1	3
Verified	2017-09-30	alpertron	B961524B428310BE	1	0	1	3
Verified	2017-12-07	ATH	B961524B428310BE	1	189520	1	3
Unverified (Reliable)	2020-04-17	Oliver Kruse	2C8EDCCB2F25D3__	1	97668	5	3

History

Date	User	Type	Result
2023-02-06	Kevin_9611	NF-PM1	B1=10000000, B2=101194673580
2023-02-05	Kevin_9611	NF-PM1	B1=5000000, B2=21465474030
2023-02-04	Kevin_9611	NF-PM1	B1=1500000, B2=10732691970
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2020-04-17	Oliver Kruse	C-PRP	M285071/7690780432069605150246570941833 : 2C8EDCCB2F25D3__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-12-07	ATH	C-PRP	M285071/7690780432069605150246570941833 : B961524B428310BE PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-30	alpertron	C-PRP	M285071/7690780432069605150246570941833 : B961524B428310BE PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-24	Oliver Kruse	C-PRP	M285071/7690780432069605150246570941833 : B961524B428310BE PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M285071/7690780432069605150246570941833 : B961524B428310BE PRP without proof (not generated)
2016-01-12	bam	F-ECM	Factor: 7690780432069605150246570941833 / (ECM curve 1, B1=250000, B2=25000000)
2016-01-06	Gordon Spence	NF	no factor from 2^63 to 2^64
2016-01-06	Gordon Spence	NF	no factor from 2^62 to 2^63
2015-08-13	NR	NF	no factor from 2^61 to 2^62
2013-06-24	lycorn	NF	no factor from 2^60 to 2^61
2012-08-08	-Anonymous-	NF-PM1	B1=10000000, B2=500000000, E=12
2012-08-06	markr	NF-PM1	B1=10000000, B2=400000000, E=12
2011-02-19	Joss	NF-PM1	B1=2000000
2009-01-23	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-02	Sturle Sunde	NF	no factor from 2^58 to 2^59