1 749 439 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
129234724835224447817593	24	76.8	2020-07-06 08:24:29
800707262594856550276685977	27	89.4	2015-06-22 19:28:05

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)		Sergio Filippini	FFB1CDAF7667706B	0
Verified (Factored)	1998-12-06	Carlo Baffa	FFB1CDAF7667706B	1181715

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	994499E171B95C20	1	0	1	3
Verified (Factored)	2017-10-19	Oliver Kruse	994499E171B95C20	1	1499816	1	3
Verified	2020-07-06	mrh	FDBED91387456805	2	1747538	5	3
Verified	2020-07-08	oodaira	FDBED91387456805	2	1382664	5	3

P-1 factors

Date	Factor	B1	B2
2015-06-22	800707262594856550276685977	3642200	123456789

History

Date	User	Type	Result
2020-07-08	oodaira	C-PRP	M1749439/800707262594856550276685977/129234724835224447817593 : FDBED91387456805 PRP: Verified PRP without proof (not generated)
2020-07-06	mrh	C-PRP	M1749439/800707262594856550276685977/129234724835224447817593 : FDBED91387456805 PRP: Verified PRP without proof (not generated)
2020-07-06	TJAOI	F-ECM	Factor: 129234724835224447817593 / (ECM curve 76, B1=50000, B2=5000000)
2017-10-19	Oliver Kruse	C-PRP	M1749439/800707262594856550276685977 : 994499E171B95C20 PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1749439/800707262594856550276685977 : 994499E171B95C20 PRP: Verified PRP without proof (not generated)
2015-06-22	mikr	F-PM1	Factor: 800707262594856550276685977 / (P-1, B1=3642200, B2=123456789, E=12)
2015-05-13	snme2pm1	NF	no factor from 2^64 to 2^65
2015-05-13	snme2pm1	NF	no factor from 2^63 to 2^64
2015-04-22	Squeeky_Squirrel	NF-PM1	B1=130000, B2=3640000, E=6
2014-09-15	-Anonymous-	NF-PM1	B1=173376
2014-05-06	Joss	NF-PM1	B1=136688
2014-04-08	Joss	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=95000, B2=1543750, E=6
2010-12-13	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-23	Architects Cubed	NF	no factor from 2^60 to 2^61