1 811 923 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
2768102930631052598619433	25	81.2	2020-04-20 05:46:53

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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	Shift
Verified (Factored)		Jeff Woods	FD581D95102DBCE7	0
Verified (Factored)	1999-03-15	Bryan Boggs	FD581D95102DBCE7	1252553
Verified (Factored)	2015-06-27	MadPoo	FD581D95102DBCE7	35768

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-04-20	Christoph Zenger	62F34D71D1638A3D	1	507336	5	3
Verified	2020-04-20	M Miller	62F34D71D1638A3D	1	1193377	5	3

History

Date	User	Type	Result
2020-04-20	M Miller	C-PRP	M1811923/2768102930631052598619433 : 62F34D71D1638A3D PRP: Verified PRP without proof (not generated)
2020-04-20	Christoph Zenger	C-PRP	M1811923/2768102930631052598619433 : 62F34D71D1638A3D PRP: Verified PRP without proof (not generated)
2020-04-20	mnd9	F-ECM	Factor: 2768102930631052598619433 / (ECM curve 1, B1=50000, B2=5000000, Sigma=8550351259088388)
2019-07-17	TJAOI	NF	no factor from 2^67 to 2^68
2018-09-20	Joss	NF-PM1	B1=1811923, B2=181192300, E=12
2018-04-09	TJAOI	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-02-23	Mark Rose	NF	no factor from 2^61 to 2^62
2015-09-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-06-27	MadPoo	C-LL	FD581D95102DBCE7
2015-05-16	mikr	NF-PM1	B1=2780000, B2=91760000, E=12
2015-04-22	snme2pm1	NF	no factor from 2^64 to 2^65
2015-04-22	snme2pm1	NF	no factor from 2^63 to 2^64
2014-09-20	Joss	NF-PM1	B1=170846
2014-05-12	Joss	NF-PM1	B1=135423
2011-02-11	Carsten Kossendey	NF-PM1	B1=100000, B2=1650000, E=6
2011-01-21	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-17	Architects Cubed	NF	no factor from 2^60 to 2^61