1 912 139 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
3430377367	10	31.7	old
550191399396511	15	49.0	2008-08-26 20:20:16
3324189495971146652052191	25	81.5	2022-01-06 11:57:51
2762376559967836713742741249	28	91.2	2020-12-01 22:19:10

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	8D1D1CF4B3601B85	2	0	1	3
Verified (Factored)	2017-11-09	kkmrkkblmbrbk	8D1D1CF4B3601B85	2	837909	1	3
Verified (Factored)	2020-12-01	Oliver Kruse	03E4D8B52AB30DF2	3	384299	5	3
Verified	2022-01-09	SRJ2877	03E4D8B52AB30DF2	4	917088	5	3

History

Date	User	Type	Result
2022-01-09	TerminaTore	CERT	PRP Certification Proof certified good
2022-01-09	SRJ2877	C-PRP	M1912139/3430377367/550191399396511/3324189495971146652052191/2762376559967836713742741249 : 03E4D8B52AB30DF2 PRP proof power = 7 PRP: Verified Proof certified good
2022-01-06	TJAOI	F-ECM	Factor: 3324189495971146652052191 / (ECM curve 113, B1=50000, B2=6600000)
2021-07-03	Dylan Delgado	NF-PM1	B1=2000000, B2=262000000
2021-04-07	Dylan Delgado	NF-PM1	B1=1000000, B2=71000000
2020-12-02	Ben Delo	CERT	PRP Certification Proof certified good
2020-12-01	Oliver Kruse	C-PRP	M1912139/3430377367/550191399396511/2762376559967836713742741249 : 03E4D8B52AB30DF2 PRP proof power = 7 PRP: Verified (Factored) Proof certified good
2020-12-01	nordi	F-ECM	Factor: 2762376559967836713742741249 / (ECM curve 2, B1=50000, B2=5000000, Sigma=2225272823632257)
2017-11-09	kkmrkkblmbrbk	C-PRP	M1912139/3430377367/550191399396511 : 8D1D1CF4B3601B85 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1912139/3430377367/550191399396511 : 8D1D1CF4B3601B85 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-08-26	-Anonymous-	F	Factor: 550191399396511