2 176 547 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
2236683353680191741740340521	28	90.9	2019-11-22 18:12:03

ECM

Digits	B1	Curves
25	50000	93 / 280

Estimated T-Level: 21.7 ⓘ

TF below 2^67 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Jeffrey L. Vagle	0849F817E2D4AD4C	0
Verified (Factored)	1999-02-14	Steven Fuller	0849F817E2D4AD4C	904885
Verified (Factored)	2018-04-12	kkmrkkblmbrbk	0849F817E2D4AD4C	2170861

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-11-23	mnd9	103DCB62BB9D93B3	1	330823	5	3
Verified	2019-11-30	Nesowa	103DCB62BB9D93B3	1	361300	5	3

P-1 factors

Date	Factor	B1	B2
2019-11-22	2236683353680191741740340521	5000000	200000000

History

Date	User	Type	Result
2019-11-30	Nesowa	C-PRP	M2176547/2236683353680191741740340521 : 103DCB62BB9D93B3 PRP: Verified PRP without proof (not generated)
2019-11-23	mnd9	C-PRP	M2176547/2236683353680191741740340521 : 103DCB62BB9D93B3 PRP: Verified PRP without proof (not generated)
2019-11-22	mikr	F-PM1	Factor: 2236683353680191741740340521 / (P-1, B1=5000000, B2=200000000, E=12)
2019-04-29	TJAOI	NF	no factor from 2^67 to 2^68
2018-04-12	kkmrkkblmbrbk	C-LL	0849F817E2D4AD4C
2016-11-17	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^58 to 2^60
2016-01-02	ramgeis	NF	no factor from 2^65 to 2^66
2015-12-22	HBendtz	NF-PM1	B1=700000, B2=21000000, e=12
2015-03-25	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-03-25	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-10-05	Joss	NF-PM1	B1=148978
2014-06-13	Joss	NF-PM1	B1=119489
2013-09-09	ramgeis	NF	no factor from 2^62 to 2^63
2011-01-15	markr	NF-PM1	B1=90000, B2=1620000, E=6
2010-11-08	Joss	NF-PM1	B1=30000
2010-11-05	Joss	NF-PM1	B1=15000
2009-01-07	Sturle Sunde	NF	no factor from 2^61 to 2^62
2009-01-05	Sturle Sunde	NF	no factor from 2^60 to 2^61