2 627 981 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
109050246120469549914647	24	76.5	2018-07-20 10:13:04

ECM

Digits	B1	Curves
25	50000	30 / 280

Estimated T-Level: 20.5 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Charles Hanes	672CE65FD73AF8CB	0
Verified (Factored)		Renato Pelessoni	672CE65FD73AF8CB	0
Verified (Factored)	1999-04-02	Ethan Hansen	672CE65FD73AF8CB	408639

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-07-23	_p95holder_	9FA23863EB04528D	1	2270771	5	3
Verified	2018-07-24	kkmrkkblmbrbk	9FA23863EB04528D	1	2094062	5	3

P-1 factors

Date	Factor	B1	B2
2018-07-20	109050246120469549914647	8000000	250000000

History

Date	User	Type	Result
2019-07-04	alpertron	NF-PM1	B1=2000000, B2=60000000, E=12
2018-07-24	kkmrkkblmbrbk	C-PRP	M2627981/109050246120469549914647 : 9FA23863EB04528D PRP: Verified PRP without proof (not generated)
2018-07-23	_p95holder_	C-PRP	M2627981/109050246120469549914647 : 9FA23863EB04528D PRP: Verified PRP without proof (not generated)
2018-07-20	mikr	F-PM1	Factor: 109050246120469549914647 / (P-1, B1=8000000, B2=250000000, E=12)
2017-09-01	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2016-01-18	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-23	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-23	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-17	Grant McCracken	NF	no factor from 2^61 to 2^62
2011-02-28	James Heinrich	NF-PM1	B1=300000, B2=8000000, E=12
2011-01-20	Joss	NF-PM1	B1=50000
2010-12-26	Joss	NF-PM1	B1=30000
2010-12-21	Joss	NF-PM1	B1=20000
2009-01-29	Sturle Sunde	NF	no factor from 2^60 to 2^61