2 904 001 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
271485023666897998082804527	27	87.8	2020-03-19 16:25:37

ECM

Digits	B1	Curves
25	50000	35 / 280

Estimated T-Level: 20.6 ⓘ

TF below 2^64 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Matt Clapp	6B35D355EB2EA7D1	0
Verified (Factored)	1999-07-27	Carl Mikkelsen	6B35D355EB2EA7D1	884738
Verified (Factored)	2018-10-01	kkmrkkblmbrbk	6B35D355EB2EA7D1	362307

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-03-20	M Miller	D01D9015F7D93D86	1	2828620	5	3
Verified	2020-03-20	ATH	D01D9015F7D93D86	1	210008	5	3

P-1 factors

Date	Factor	B1	B2
2020-03-19	271485023666897998082804527	5000000	200000000

History

Date	User	Type	Result
2020-03-20	ATH	C-PRP	M2904001/271485023666897998082804527 : D01D9015F7D93D86 PRP: Verified PRP without proof (not generated)
2020-03-20	M Miller	C-PRP	M2904001/271485023666897998082804527 : D01D9015F7D93D86 PRP: Verified PRP without proof (not generated)
2020-03-19	masser	F-PM1	Factor: 271485023666897998082804527 / (P-1, B1=5000000, B2=200000000, E=12)
2018-12-17	chuenkit	NF	no factor from 2^67 to 2^68
2018-10-01	kkmrkkblmbrbk	C-LL	6B35D355EB2EA7D1
2017-11-19	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-22	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-25	VictordeHollander	NF-PM1	B1=1000000, B2=20000000, E=12
2015-04-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2011-07-25	Rob_Dee	NF	no factor from 2^61 to 2^62
2011-01-29	markr	NF-PM1	B1=105000, B2=2283750, E=6
2010-12-24	Joss	NF-PM1	B1=20000
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=168750
2009-02-13	Sturle Sunde	NF	no factor from 2^60 to 2^61