3 360 857 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
13551417620111463266012547271	29	93.5	2020-11-24 17:37:16

ECM

Digits	B1	Curves
25	50000	15 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-02-24	Mats Dahlgren	F58D8F3E48911DFA	0
Verified (Factored)	1999-09-07	Bryan Fullerton	F58D8F3E48911DFA	2249552

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-11-25	mrh	B1573AF2DD5E63E8	1	1572168	5	3

P-1 factors

Date	Factor	B1	B2
2020-11-24	13551417620111463266012547271	4000000	150000000

History

Date	User	Type	Result
2022-04-08	Joss	NF-PM1	B1=1000000, B2=115661700
2020-11-25	curtisc	CERT	PRP Certification Proof certified good
2020-11-25	mrh	C-PRP	M3360857/13551417620111463266012547271 : B1573AF2DD5E63E8 PRP proof power = 7 PRP: Verified Proof certified good
2020-11-24	mikr	F-PM1	Factor: 13551417620111463266012547271 / (P-1, B1=4000000, B2=150000000, E=12)
2018-12-03	TJAOI	NF	no factor from 2^67 to 2^68
2017-03-07	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-03-04	ramgeis	NF	no factor from 2^65 to 2^66
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-07-18	Squeeky_Squirrel	NF-PM1	B1=230000, B2=6670000, E=12
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
2014-09-29	Joss	NF-PM1	B1=95318
2014-06-09	Joss	NF-PM1	B1=76220
2012-11-15	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-10-13	USAFSS	NF-PM1	B1=55000, B2=907500, E=6
2011-09-08	Grant McCracken	NF	no factor from 2^61 to 2^62
2009-07-06	Carsten Kossendey	NF-PM1	B1=15000, B2=206250
2009-03-28	S485122	NF	no factor from 2^60 to 2^61