15 035 827 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
12836076555197248609168400568787288136543	41	133.2	2022-03-22 08:44:26

ECM

Digits	B1	Curves
25	50000	14 / 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)	2002-07-27	Robin Tremblay	07243A079E2EDBBE	9885836
Verified (Factored)	2006-08-25	isidro_costantini	07243A079E2EDBBE	8051956

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-11-10	Naegi Makoto	D072384BDBB34DD5	1	453808	5	3

P-1 factors

Date	Factor	B1	B2
2022-03-22	12836076555197248609168400568787288136543	2000000	6630804180

History

Date	User	Type	Result
2022-11-10	yphysics	CERT	PRP Certification Proof certified good
2022-11-10	Naegi Makoto	C-PRP	M15035827/12836076555197248609168400568787288136543 : D072384BDBB34DD5 PRP proof power = 8 PRP: Verified Proof certified good
2022-04-06	ATH	NF-PP1	Start=2/7, B1=1000000, B2=29000000
2022-03-22	Luminescence	F-PM1	Factor: 12836076555197248609168400568787288136543 / (P-1, B1=2000000, B2=6630804180)
2021-10-10	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-09-02	SRBase	NF	no factor from 2^70 to 2^71
2020-06-30	Yxinity	NF	no factor from 2^69 to 2^70
2020-06-03	Tha	NF-PM1	B1=500000, B2=20000000, E=12
2017-10-01	ramgeis	NF	no factor from 2^68 to 2^69
2015-12-17	mikr	NF	no factor from 2^67 to 2^68
2014-06-11	Nesowa	NF	no factor from 2^66 to 2^67
2014-06-11	Nesowa	NF	no factor from 2^65 to 2^66