13 820 293 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
71729472694212758370862841	26	85.9	2016-08-09 12:10:32

Status	Date	User	Residue	Shift
Verified (Factored)	2002-04-14	Takashi Satomi	19D7CBC7084BB815	6402709
Verified (Factored)	2005-11-27	S350785	19D7CBC7084BB815	9247505

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-10-16	barkingcat	683592EE22DD0F3B	1	7530503	5	3

P-1 factors

Date	Factor	B1	B2
2016-08-09	71729472694212758370862841	300000	6000000

History

Date	User	Type	Result
2023-11-03	nordi	NF-PM1	B1=500000, B2=320708850
2023-10-25	nordi	NF-PM1	B1=500000
2022-10-16	curtisc	CERT	PRP Certification Proof certified good
2022-10-16	barkingcat	C-PRP	M13820293/71729472694212758370862841 : 683592EE22DD0F3B PRP proof power = 8 PRP: Verified Proof certified good
2016-08-09	Tha	F-PM1	Factor: 71729472694212758370862841 / (P-1, B1=300000, B2=6000000, E=12)
2015-08-29	Nesowa	NF	no factor from 2^66 to 2^67
2014-07-08	Nesowa	NF	no factor from 2^65 to 2^66