2 070 371 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 2 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
39380309463479632135009	23	75.1	2017-12-15 23:15:30
222694147095454895231513183	27	87.5	2023-01-07 00:07:43

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	163 / 640

Estimated T-Level: 26.3 ⓘ

TF below 2^82 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Gerardo Cisneros	5D0	0
Verified (Factored)		Bruce Lum	39FD8AB3F30165D0	0
Verified (Factored)	2002-06-02	S57483	39FD8AB3F30165D0	671333
Verified (Factored)	2017-05-21	kkmrkkblmbrbk	39FD8AB3F30165D0	1179156

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-12-18	Ducho_YYZ	1342784608F2C51B	1	1480958	5	3
Verified (Factored)	2017-12-19	kkmrkkblmbrbk	1342784608F2C51B	1	970116	5	3
Verified	2023-01-07	LordJulius	1342784608F2C51B	2	816647	5	3

History

Date	User	Type	Result
2023-05-13	This -Anonymous-	NF-PM1	B1=800000, B2=40000000, E=12
2023-01-07	curtisc	CERT	PRP Certification Proof certified good
2023-01-07	LordJulius	C-PRP	M2070371/39380309463479632135009/222694147095454895231513183 : 1342784608F2C51B PRP proof power = 7 PRP: Verified Proof certified good
2023-01-07	_p95holder_	F-ECM	Factor: 222694147095454895231513183 / (ECM curve 7, B1=50000, B2=5000000)
2017-12-19	kkmrkkblmbrbk	C-PRP	M2070371/39380309463479632135009 : 1342784608F2C51B PRP: Verified (Factored) PRP without proof (not generated)
2017-12-18	Ducho_YYZ	C-PRP	M2070371/39380309463479632135009 : 1342784608F2C51B PRP: Verified (Factored) PRP without proof (not generated)
2017-12-15	Lelikoid	F-ECM	Factor: 39380309463479632135009 / (ECM curve 1, B1=50000, B2=5000000)
2017-05-21	kkmrkkblmbrbk	C-LL	39FD8AB3F30165D0
2016-09-07	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2015-11-04	ramgeis	NF	no factor from 2^65 to 2^66
2015-03-28	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-28	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-11-12	c10ck3r	NF-PM1	B1=500000, B2=10000000, E=12
2013-02-21	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-16	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61