4 051 517 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
11344473632037985407601	23	73.3	2021-06-24 13:50:42

ECM

Digits	B1	Curves
25	50000	57 / 280

Estimated T-Level: 21.0 ⓘ

TF below 2^65 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1998-05-08	Ken Burbank	093D1F7031BE77DE	0
Verified (Factored)	1999-10-21	C. Cooper / S. Boone	093D1F7031BE77DE	3839428

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-06-26	RichD0	13B37F4CD9661495	1	2734559	5	3

P-1 factors

Date	Factor	B1	B2
2023-09-21	11344473632037985407601	600000	378656850

History

Date	User	Type	Result
2023-09-21	USAFSS	F-PM1	Factor: 11344473632037985407601 / (P-1, B1=600000, B2=378656850)
2021-06-26	curtisc	CERT	PRP Certification Proof certified good
2021-06-26	RichD0	C-PRP	M4051517/11344473632037985407601 : 13B37F4CD9661495 PRP proof power = 7 PRP: Verified Proof certified good
2021-06-24	ATH	F-PP1	Start=2/7, B1=2500000, B2=177500000, Factor: 11344473632037985407601
2020-09-20	mikr	NF	no factor from 2^69 to 2^70
2020-09-20	mikr	NF	no factor from 2^68 to 2^69
2018-11-03	Yxinity	NF	no factor from 2^67 to 2^68
2016-11-27	Ismo Laitela	NF-PM1	B1=2189464, B2=63494458, E=12
2016-09-17	kkmrkkblmbrbk	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-05-21	snme2pm1	NF	no factor from 2^65 to 2^66
2013-10-23	David Campeau	NF	no factor from 2^64 to 2^65
2013-08-17	Jayder	NF	no factor from 2^63 to 2^64
2013-06-07	Squeeky_Squirrel	NF-PM1	B1=120000, B2=2310000, E=6
2011-06-30	USAFSS	NF-PM1	B1=40000, B2=580000
2011-05-28	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-10-11	Grant McCracken	NF	no factor from 2^61 to 2^62