4 441 111 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
16012105959687734439631172715623	32	103.7	2017-10-28 13:20:10

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	56 / 640

Estimated T-Level: 25.4 ⓘ

TF below 2^80 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Phil Brett	F4F3AFA11775F579	0
Bad	2000-02-16	Mundek	058C54884FBBCDF8	981401
Verified (Factored)	2001-04-15	Eli Kane	F4F3AFA11775F579	2577938

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-29	Yaroslav Berezhko	66D2B1B111B3BBAC	1	3614541	5	3
Verified	2017-10-30	Yaroslav Berezhko	66D2B1B111B3BBAC	1	819447	5	3
Verified	2018-03-16	kkmrkkblmbrbk	66D2B1B111B3BBAC	1	3391327	5	3

P-1 factors

Date	Factor	B1	B2
2017-10-28	16012105959687734439631172715623	12000000	0

History

Date	User	Type	Result
2022-09-09	USAFSS	NF-PM1	B1=280000, B2=145842840
2018-03-16	kkmrkkblmbrbk	C-PRP	M4441111/16012105959687734439631172715623 : 66D2B1B111B3BBAC PRP: Verified PRP without proof (not generated)
2017-10-30	Yaroslav Berezhko	C-PRP	M4441111/16012105959687734439631172715623 : 66D2B1B111B3BBAC PRP: Verified PRP without proof (not generated)
2017-10-29	Yaroslav Berezhko	C-PRP	M4441111/16012105959687734439631172715623 : 66D2B1B111B3BBAC PRP: Verified PRP without proof (not generated)
2017-10-28	mikr	F-PM1	Factor: 16012105959687734439631172715623 / (P-1, B1=12000000)
2017-10-28	mikr	NF-PM1	B1=9000000
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-06-23	snme2pm1	NF	no factor from 2^65 to 2^66
2014-12-02	Nesowa	NF-PM1	B1=255000, B2=5482500, E=6
2014-09-13	monst	NF	no factor from 2^64 to 2^65
2014-09-07	Jayder	NF	no factor from 2^63 to 2^64
2014-08-22	Joss	NF-PM1	B1=64452
2012-02-03	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2011-07-06	USAFSS	NF-PM1	B1=50000, B2=812500, E=6
2010-04-03	Architects Cubed	NF	no factor from 2^61 to 2^62