1 909 987 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
12940575883523516636593	23	73.5	2019-12-14 05:17:54
150912032367901523596127	24	77.0	2024-03-04 10:45:37

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1997-12-09	Mikko Tommila	946072B6F7567D0C	0
Verified (Factored)	1999-01-10	Hgin normaalilyseo	946072B6F7567D0C	888002
Verified (Factored)	2015-07-04	MadPoo	946072B6F7567D0C	392347

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2019-12-15	xyuzyz	BEAB30725ADA97A1	1	909923	5	3
Verified (Factored)	2019-12-15	Ivan M	BEAB30725ADA97A1	1	1402145	5	3
Verified	2024-03-04	Naegi Makoto	BEAB30725ADA97A1	2	574692	5	3

History

Date	User	Type	Result
2024-03-04	dirkswanson	CERT	PRP Certification Proof certified good
2024-03-04	Naegi Makoto	C-PRP	M1909987/12940575883523516636593/150912032367901523596127 : BEAB30725ADA97A1 PRP proof power = 7 PRP: Verified Proof certified good
2024-03-04	TJAOI	F-ECM	Factor: 150912032367901523596127 / (ECM curve 46, B1=250000, B2=40000000, Sigma=977000386088444)
2019-12-15	Ivan M	C-PRP	M1909987/12940575883523516636593 : BEAB30725ADA97A1 PRP: Verified (Factored) PRP without proof (not generated)
2019-12-15	xyuzyz	C-PRP	M1909987/12940575883523516636593 : BEAB30725ADA97A1 PRP: Verified (Factored) PRP without proof (not generated)
2019-12-14	Keysarecool	F-ECM	Factor: 12940575883523516636593 / (ECM curve 1, B1=50000, B2=5000000, Sigma=5427901471320391)
2019-04-27	chuenkit	NF	no factor from 2^67 to 2^68
2017-12-08	mikr	NF-PM1	B1=8000000, B2=320000000, E=12
2017-03-15	Smok_bmv	NF	no factor from 2^66 to 2^67
2015-09-01	ramgeis	NF	no factor from 2^65 to 2^66
2015-07-04	MadPoo	C-LL	946072B6F7567D0C
2015-05-19	monst	NF	no factor from 2^64 to 2^65
2015-05-18	omylist	NF	no factor from 2^63 to 2^64
2011-06-14	kurly	NF-PM1	B1=1000000, B2=30000000, E=12
2011-03-09	GrunwalderGIMP	NF	no factor from 2^62 to 2^63
2011-03-09	GrunwalderGIMP	NF	no factor from 2^61 to 2^62
2009-05-27	Architects Cubed	NF	no factor from 2^60 to 2^61