847 789 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
45780607	8	25.4	old
31347166137223	14	44.8	2008-08-26 19:52:31
303058102918577	15	48.1	2014-03-26 11:36:08
641942528354945383	18	59.2	2014-09-23 11:24:57
6276355053396676979713	22	72.4	2016-01-15 14:50:55
28919858331358516054803090820199	32	104.5	2016-01-15 14:50:56

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	100 / 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	Number of known factors	Shift	Type	Base
Verified	2017-09-30	alpertron	7EAE49526CA87CB1	6	0	1	3
Verified	2017-10-14	Oliver Kruse	7EAE49526CA87CB1	6	697741	1	3
Unverified (Reliable)	2020-04-21	Oliver Kruse	0D0C570FC174D9__	6	157058	5	3

P-1 factors

Date	Factor	B1	B2
2014-09-23	641942528354945383	300000	10000000

History

Date	User	Type	Result
2023-02-12	Kevin_9611	NF-PM1	B1=6250000, B2=10070110050
2023-02-09	Kevin_9611	NF-PM1	B1=2500000, B2=2563871310
2020-04-21	Oliver Kruse	C-PRP	M847789/45780607/31347166137223/303058102918577/641942528354945383/6276355053396676979713/28919858331358516054803090820199 : 0D0C570FC174D9__ PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-10-14	Oliver Kruse	C-PRP	M847789/45780607/31347166137223/303058102918577/641942528354945383/6276355053396676979713/28919858331358516054803090820199 : 7EAE49526CA87CB1 PRP: Unverified (Reliable) PRP without proof (small exponent)
2017-09-30	alpertron	C-PRP	M847789/28919858331358516054803090820199/303058102918577/31347166137223/45780607/6276355053396676979713/641942528354945383 : 7EAE49526CA87CB1 PRP: Unverified (Reliable) PRP without proof (not generated)
2017-09-28	Oliver Kruse	C-PRP	M847789/45780607/31347166137223/303058102918577/641942528354945383/6276355053396676979713/28919858331358516054803090820199 : 7EAE49526CA87CB1 PRP without proof (not generated)
2016-01-15	TJAOI	F-ECM	Factor: 28919858331358516054803090820199 / (ECM curve 21, B1=50000, B2=5000000)
2016-01-15	TJAOI	F-ECM	Factor: 6276355053396676979713 / (ECM curve 30, B1=50000, B2=5000000)
2014-09-23	alpertron	F-PM1	Factor: 641942528354945383 / (P-1, B1=300000, B2=10000000, E=12)
2014-03-26	TJAOI	F	Factor: 303058102918577
2008-08-26	-Anonymous-	F	Factor: 31347166137223