12 200 029 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
8244094331687517270193	22	72.8	2018-11-13 16:32:04

ECM

Digits	B1	Curves
25	50000	15 / 280

Estimated T-Level: 20.3 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2001-04-15	Taiki Komoda	AB6DDB66FC9D98EE	1880003
Verified (Factored)	2004-06-12	Ing. Pavel PaJaSoft Janousek	AB6DDB66FC9D98EE	8301584

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-11-15	riccardo uberti	8B8F63808B9F466E	1	8414357	5	3
Verified	2021-01-12	Jaytholomew	8B8F63808B9F466E	1	196004	5	3

P-1 factors

Date	Factor	B1	B2
2018-11-13	8244094331687517270193	430000	8500000

History

Date	User	Type	Result
2022-02-05	riccardo uberti	NF-PM1	B1=1500000, B2=30000000
2021-01-12	Alex S.	CERT	PRP Certification Proof certified good
2021-01-12	Jaytholomew	C-PRP	M12200029/8244094331687517270193 : 8B8F63808B9F466E PRP proof power = 8 PRP: Verified Proof certified good
2018-11-15	riccardo uberti	C-PRP	M12200029/8244094331687517270193 : 8B8F63808B9F466E PRP: Verified PRP without proof (not generated)
2018-11-13	riccardo uberti	F-PM1	Factor: 8244094331687517270193 / (P-1, B1=430000, B2=8500000, E=12)
2017-10-20	ramgeis	NF	no factor from 2^68 to 2^69
2015-07-14	Tha	NF	no factor from 2^67 to 2^68
2015-03-02	Tha	NF	no factor from 2^66 to 2^67
2013-09-27	Nesowa	NF	no factor from 2^65 to 2^66
2013-08-14	lycorn	NF	no factor from 2^64 to 2^65