2 364 361 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
20401513898463850699936841	26	84.1	2021-02-22 13:08:41

ECM

Digits	B1	Curves
25	50000	110 / 280

Estimated T-Level: 22.0 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		John Lloyd	F2A8F3961D4ABF76	0
Verified (Factored)	1999-03-15	Jim Simpson	F2A8F3961D4ABF76	422438
Verified (Factored)	2018-05-11	kkmrkkblmbrbk	F2A8F3961D4ABF76	2062410

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-02-24	LaurV	D66B542718ABAE48	1	8553	5	3

History

Date	User	Type	Result
2021-02-24	curtisc	CERT	PRP Certification Proof certified good
2021-02-24	LaurV	C-PRP	M2364361/20401513898463850699936841 : D66B542718ABAE48 PRP proof power = 7 PRP: Verified Proof certified good
2021-02-22	Zenzoma	F-ECM	Factor: 20401513898463850699936841 / (ECM curve 3, B1=50000, B2=5000000, Sigma=6250882374381817)
2019-04-15	TJAOI	NF	no factor from 2^67 to 2^68
2018-05-11	kkmrkkblmbrbk	C-LL	F2A8F3961D4ABF76
2017-06-13	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
2015-10-29	ramgeis	NF	no factor from 2^65 to 2^66
2015-09-06	mikr	NF-PM1	B1=3000000, B2=100000000, E=12
2015-03-09	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-09	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-09-10	Joss	NF-PM1	B1=127147
2013-12-04	Jerry Hallett	NF	no factor from 2^62 to 2^63
2012-05-30	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2010-12-31	markr	NF-PM1	B1=100000, B2=2025000, E=6
2010-11-03	Joss	NF-PM1	B1=20000
2009-01-15	Sturle Sunde	NF	no factor from 2^60 to 2^61