3 623 449 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
1407888655213238346187800732929	31	100.2	2020-06-26 01:42:56

ECM

Digits	B1	Curves
25	50000	12 / 280

Estimated T-Level: 20.2 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-02-08	Jan Peters	2B277595D4AF63EA	0
Verified (Factored)	1999-09-14	Alexey Guzeev	2B277595D4AF63EA	3116779

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2020-06-26	Christoph Zenger	58EE7101D2950E85	1	1882749	5	3
Verified	2020-06-28	fre_games	58EE7101D2950E85	1	1091925	5	3

P-1 factors

Date	Factor	B1	B2
2020-06-26	1407888655213238346187800732929	30000000	30000000

History

Date	User	Type	Result
2022-09-02	USAFSS	NF-PM1	B1=600000, B2=389304630
2022-05-24	Joss	NF-PM1	B1=100000, B2=130364850
2020-06-28	fre_games	C-PRP	M3623449/1407888655213238346187800732929 : 58EE7101D2950E85 PRP: Verified PRP without proof (not generated)
2020-06-26	Christoph Zenger	C-PRP	M3623449/1407888655213238346187800732929 : 58EE7101D2950E85 PRP: Verified PRP without proof (not generated)
2020-06-26	axn	F-PM1	Factor: 1407888655213238346187800732929 / (P-1, B1=30000000)
2018-10-22	TJAOI	NF	no factor from 2^67 to 2^68
2017-05-30	Joss	NF-PM1	B1=350000, B2=3500000, E=6
2016-12-23	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-11-03	Squeeky_Squirrel	NF-PM1	B1=175000, B2=4768750, E=6
2015-10-18	ramgeis	NF	no factor from 2^65 to 2^66
2015-01-20	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-01-20	VictordeHollander	NF	no factor from 2^63 to 2^64
2012-06-20	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2012-01-16	Squeeky_Squirrel	NF-PM1	B1=90000, B2=1620000, E=6
2011-05-29	markr	NF	no factor to 2^62
2009-07-06	Carsten Kossendey	NF-PM1	B1=20000, B2=245000
2009-03-12	S485122	NF	no factor from 2^60 to 2^61