1 916 833 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
1525772273576373296399	22	70.4	2013-11-28 05:36:23
6447429700254535057409	22	72.4	2022-01-11 13:01:51

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	106 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Tom Cattrall	9083F7C6FE6A48A3	0
Verified (Factored)	1999-01-02	Douglas Dunning	9083F7C6FE6A48A3	608176

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-30	alpertron	2EA7877A6883831D	1	0	1	3
Verified (Factored)	2017-10-20	Oliver Kruse	2EA7877A6883831D	1	207628	1	3
Verified	2022-01-11	SRJ2877	C8E189E196EACC37	2	1883714	5	3
Verified	2022-01-11	LordJulius	C8E189E196EACC37	2	585495	5	3

History

Date	User	Type	Result
2022-01-11	Ember_Edison	CERT	PRP Certification Proof certified good
2022-01-11	LordJulius	C-PRP	M1916833/1525772273576373296399/6447429700254535057409 : C8E189E196EACC37 PRP proof power = 7 PRP: Verified Proof certified good
2022-01-11	Simon Josefsson	CERT	PRP Certification Proof certified good
2022-01-11	SRJ2877	C-PRP	M1916833/1525772273576373296399/6447429700254535057409 : C8E189E196EACC37 PRP proof power = 7 PRP: Verified Proof certified good
2022-01-11	_p95holder_	F-ECM	Factor: 6447429700254535057409 / (ECM curve 1, B1=50000, B2=5000000)
2017-10-20	Oliver Kruse	C-PRP	M1916833/1525772273576373296399 : 2EA7877A6883831D PRP: Verified (Factored) PRP without proof (not generated)
2017-09-30	alpertron	C-PRP	M1916833/1525772273576373296399 : 2EA7877A6883831D PRP: Verified (Factored) PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2013-11-28	Andy Incline	F-ECM	Factor: 1525772273576373296399
2011-08-26	kurly	NF-PM1	B1=1000000, B2=30000000, E=12
2011-07-17	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2009-06-01	Architects Cubed	NF	no factor from 2^60 to 2^61