13 287 101 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
3274736329638448092967	22	71.5	2021-10-22 18:59:47

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	2001-10-27	Bartholomew Barker	C2AF3037737B82C6	11258469
Verified (Factored)	2005-07-01	Ars Technica Team Prime Rib	C2AF3037737B82C6	2817589

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2022-07-08	Wentao Huang	B7ECF4293612F9FD	1	7360361	5	3

History

Date	User	Type	Result
2023-10-30	nordi	NF-PM1	B1=500000, B2=315199500
2023-10-23	nordi	NF-PM1	B1=500000
2022-07-08	Graeme Holyoake	CERT	PRP Certification Proof certified good
2022-07-08	Wentao Huang	C-PRP	M13287101/3274736329638448092967 : B7ECF4293612F9FD PRP proof power = 8 PRP: Verified Proof certified good
2021-10-22	-Anonymous-	F	Factor: 3274736329638448092967 / TF: 71-72*
2021-09-03	SRBase	NF	no factor from 2^70 to 2^71
2021-08-08	SRBase	NF	no factor from 2^69 to 2^70
2018-01-07	ramgeis	NF	no factor from 2^68 to 2^69
2017-12-23	-Anonymous-	NF	no factor from 2^67 to 2^68
2017-03-12	Tha	NF-PM1	B1=300000, B2=6000000, E=12
2015-07-20	Nesowa	NF	no factor from 2^66 to 2^67
2014-06-01	Nesowa	NF	no factor from 2^65 to 2^66
2013-05-15	lycorn	NF	no factor from 2^64 to 2^65