1 333 091 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
29039708865617991144307519	26	84.6	2013-09-08 08:19:38
278170085789776501271288759	27	87.8	2018-06-01 11:34:55

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	105 / 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)		George Woltman	E1A65D27952A7F8C	0
Verified (Factored)		Cornelius Caesar	E1A65D27952A7F8C	0
Verified (Factored)		Brian J. Beesley	E1A65D27952A7F8C	989722

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	Oliver Kruse	63E1C2D1A8E84CA6	1	0	1	3
Verified (Factored)	2017-10-23	kkmrkkblmbrbk	63E1C2D1A8E84CA6	1	876871	1	3
Verified	2018-06-01	axn	A6F7010A6A1C4E2B	2	448817	5	3
Verified	2018-06-02	Battlemaxx	A6F7010A6A1C4E2B	2	605414	5	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-06-02	Battlemaxx	C-PRP	M1333091/29039708865617991144307519/278170085789776501271288759 : A6F7010A6A1C4E2B PRP: Verified PRP without proof (not generated)
2018-06-01	axn	C-PRP	M1333091/29039708865617991144307519/278170085789776501271288759 : A6F7010A6A1C4E2B PRP: Verified PRP without proof (not generated)
2018-06-01	TJAOI	F-ECM	Factor: 278170085789776501271288759 / (ECM curve 60, B1=50000, B2=5000000)
2017-10-23	kkmrkkblmbrbk	C-PRP	M1333091/29039708865617991144307519 : 63E1C2D1A8E84CA6 PRP: Verified PRP without proof (not generated)
2017-09-30	Oliver Kruse	C-PRP	M1333091/29039708865617991144307519 : 63E1C2D1A8E84CA6 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2013-09-08	jim f in mn	F-ECM	Factor: 29039708865617991144307519
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2011-05-09	Xyzzy	NF	no factor from 2^61 to 2^62
2009-02-26	Sturle Sunde	NF	no factor from 2^60 to 2^61