3 327 497 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
12518486693434685617999	23	73.4	2021-02-06 05:12:10

ECM

Digits	B1	Curves
25	50000	20 / 280

Estimated T-Level: 20.4 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Roger Smith	57E8F53D9513B0E4	0
Verified (Factored)	1999-09-14	Marc Getty / Phil Fizur	57E8F53D9513B0E4	597609

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-02-07	ViliamF	9A4C73363897AA94	1	558029	5	3

History

Date	User	Type	Result
2022-04-08	Joss	NF-PM1	B1=1000000, B2=115661700
2021-02-07	Evil Genius	CERT	PRP Certification Proof certified good
2021-02-07	ViliamF	C-PRP	M3327497/12518486693434685617999 : 9A4C73363897AA94 PRP proof power = 7 PRP: Verified Proof certified good
2021-02-06	Zenzoma	F-ECM	Factor: 12518486693434685617999 / (ECM curve 5, B1=50000, B2=5000000, Sigma=7125890482028149)
2020-01-11	BigBrother	NF-PM1	B1=3000000, B2=90000000, E=12
2018-11-19	TJAOI	NF	no factor from 2^67 to 2^68
2017-02-27	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-04-22	USAFSS	NF-PM1	B1=225000, B2=6581250, E=12
2016-03-02	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-02-11	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-11	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-08-25	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-09-04	markr	NF	no factor from 2^61 to 2^62
2010-09-14	markr	NF-PM1	B1=95000, B2=2042500, E=6
2009-07-03	Carsten Kossendey	NF-PM1	B1=15000, B2=195000
2009-03-30	S485122	NF	no factor from 2^60 to 2^61