2 036 869 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
3997465690865991192473598937	28	91.7	2019-05-28 14:23:19

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	153 / 640

Estimated T-Level: 26.2 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Bob Bentley	16546BE38F11123D	0
Verified (Factored)		Brian J. Beesley	16546BE38F11123D	0
Verified (Factored)	2015-11-13	MadPoo	16546BE38F11123D	586929

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-05-29	Niels_Mache_Nextcloud	9B14F9089D8C0F07	1	1610016	5	3
Verified	2019-05-30	kkmrkkblmbrbk	9B14F9089D8C0F07	1	108895	5	3

P-1 factors

Date	Factor	B1	B2
2019-05-28	3997465690865991192473598937	4000000	0

History

Date	User	Type	Result
2019-05-30	kkmrkkblmbrbk	C-PRP	M2036869/3997465690865991192473598937 : 9B14F9089D8C0F07 PRP: Verified PRP without proof (not generated)
2019-05-29	Niels_Mache_Nextcloud	C-PRP	M2036869/3997465690865991192473598937 : 9B14F9089D8C0F07 PRP: Verified PRP without proof (not generated)
2019-05-28	mikr	F-PM1	Factor: 3997465690865991192473598937 / (P-1, B1=4000000)
2019-03-21	chuenkit	NF	no factor from 2^67 to 2^68
2016-07-29	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
2015-11-13	MadPoo	C-LL	16546BE38F11123D
2015-11-01	ramgeis	NF	no factor from 2^65 to 2^66
2015-10-05	Bruno Victal	NF-PM1	B1=500000, B2=15000000, E=12
2015-04-13	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-13	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-17	Joss	NF-PM1	B1=163022
2014-07-04	Joss	NF-PM1	B1=131511
2013-08-29	ramgeis	NF	no factor from 2^62 to 2^63
2012-02-10	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2009-02-05	markr	NF-PM1	B1=100000, B2=3000000, E=6
2009-01-02	Sturle Sunde	NF	no factor from 2^60 to 2^61