5 056 651 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
8803520579838037823026351480195681	34	112.8	2017-06-25 10:20:39

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

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

Status	Date	User	Residue	Shift
Verified (Factored)		Ken Kriesel	3DF664373BA92DB1	0
Verified (Factored)	2000-05-31	Ola Svallmark	3DF664373BA92DB1	1846269

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	8BF4FF07A5F28A9E	1	0	1	3
Verified	2018-01-19	kkmrkkblmbrbk	8BF4FF07A5F28A9E	1	4783254	1	3

P-1 factors

Date	Factor	B1	B2
2017-06-25	8803520579838037823026351480195681	1500000	45000000

History

Date	User	Type	Result
2018-01-19	kkmrkkblmbrbk	C-PRP	M5056651/8803520579838037823026351480195681 : 8BF4FF07A5F28A9E PRP: Verified PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M5056651/8803520579838037823026351480195681 : 8BF4FF07A5F28A9E PRP: Verified PRP without proof (not generated)
2017-06-25	mikr	F-PM1	Factor: 8803520579838037823026351480195681 / (P-1, B1=1500000, B2=45000000, E=12)
2016-05-20	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
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^61
2015-08-01	snme2pm1	NF	no factor from 2^65 to 2^66
2014-09-14	monst	NF	no factor from 2^64 to 2^65
2014-09-03	kracker	NF	no factor from 2^63 to 2^64
2009-08-08	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2009-07-30	USAFSS	NF-PM1	B1=60000, B2=1065000, E=6
2008-09-01	Sturle Sunde	NF	no factor from 2^61 to 2^62