1 145 059 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
978411554246405456183	21	69.7	2015-04-02 07:28:03

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	104 / 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)		David Slowinski	1F78	0
Verified (Factored)		Michael Hogan	6DBF788B7269DF78	0
Verified (Factored)	2002-07-06	S57483	6DBF788B7269DF78	584706

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	BA7F50721BD59413	1	0	1	3
Verified	2017-10-17	Oliver Kruse	BA7F50721BD59413	1	1075968	1	3
Verified	2018-01-06	ATH	BA7F50721BD59413	1	537619	1	3

P-1 factors

Date	Factor	B1	B2
2015-04-02	978411554246405456183	5000000	200000000

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2018-01-06	ATH	C-PRP	M1145059/978411554246405456183 : BA7F50721BD59413 PRP: Verified PRP without proof (not generated)
2017-10-17	Oliver Kruse	C-PRP	M1145059/978411554246405456183 : BA7F50721BD59413 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1145059/978411554246405456183 : BA7F50721BD59413 PRP: Verified PRP without proof (not generated)
2015-04-02	mikr	F-PM1	Factor: 978411554246405456183 / (P-1, B1=5000000, B2=200000000, E=12)
2015-01-12	lycorn	NF	no factor from 2^64 to 2^65
2014-12-28	Matthias Wurtinger	NF	no factor from 2^63 to 2^64
2012-12-01	dbaugh	NF	no factor from 2^62 to 2^63
2012-08-29	Axelsson	NF	no factor from 2^61 to 2^62
2012-01-31	markr	NF-PM1	B1=500000, B2=10000000, E=12
2009-02-17	Sturle Sunde	NF	no factor from 2^60 to 2^61