2 841 031 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
7457825698303	13	42.8	old
1914931331848142009	19	60.7	2016-03-01 12:41:37
42963088389080453983	20	65.2	2018-08-01 12:46:45

ECM

Digits	B1	Curves
25	50000	3 / 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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-22	Oliver Kruse	5A05BF31F645985D	2	105739	5	3
Verified (Factored)	2017-12-07	kkmrkkblmbrbk	5A05BF31F645985D	2	1007793	5	3
Verified	2018-08-02	_p95holder_	5A05BF31F645985D	3	453939	5	3

History

Date	User	Type	Result
2023-02-03	USAFSS	NF-PM1	B1=360000, B2=287380170
2022-03-10	LordJulius	NF	no factor from 2^64 to 2^65
2022-03-10	LordJulius	NF	no factor from 2^63 to 2^64
2022-03-10	LordJulius	NF	no factor from 2^62 to 2^63
2022-03-10	LordJulius	NF	no factor from 2^61 to 2^62
2018-08-02	_p95holder_	C-PRP	M2841031/7457825698303/1914931331848142009/42963088389080453983 : 5A05BF31F645985D PRP: Verified PRP without proof (not generated)
2018-08-01	TJAOI	F	Factor: 42963088389080453983 / TF: 65-66
2017-12-07	kkmrkkblmbrbk	C-PRP	M2841031/7457825698303/1914931331848142009 : 5A05BF31F645985D PRP: Verified PRP without proof (not generated)
2017-10-22	Oliver Kruse	C-PRP	M2841031/7457825698303/1914931331848142009 : 5A05BF31F645985D PRP: Verified PRP without proof (not generated)
2016-03-01	TJAOI	F	Factor: 1914931331848142009 / TF: 60-61