12 861 637 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
5719448405585970826009	22	72.3	2019-10-14 02:28:22

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)	2001-07-17	Steve Spicer	D4C2F31B81A5DF1B	9911
Verified (Factored)	2004-09-16	Marc Getty / Phil Fizur	D4C2F31B81A5DF1B	10816584

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-11-25	riccardo uberti	AE2BA027A22691BA	1	11624050	5	3
Verified	2021-01-15	Jaytholomew	AE2BA027A22691BA	1	8669389	5	3

History

Date	User	Type	Result
2022-05-07	riccardo uberti	NF-PM1	B1=1500000, B2=102434010
2021-01-15	SRJ2877	CERT	PRP Certification Proof certified good
2021-01-15	Jaytholomew	C-PRP	M12861637/5719448405585970826009 : AE2BA027A22691BA PRP proof power = 8 PRP: Verified Proof certified good
2019-11-25	riccardo uberti	C-PRP	M12861637/5719448405585970826009 : AE2BA027A22691BA PRP: Verified PRP without proof (not generated)
2019-10-14	Sergey Nosov	F-ECM	Factor: 5719448405585970826009 / (ECM curve 1, B1=50000, B2=5000000)
2018-07-13	riccardo uberti	NF-PM1	B1=430000, B2=8500000, E=12
2018-01-07	ramgeis	NF	no factor from 2^68 to 2^69
2018-01-07	ramgeis	NF	no factor from 2^67 to 2^68
2015-04-11	Tha	NF	no factor from 2^66 to 2^67
2014-04-27	Nesowa	NF	no factor from 2^65 to 2^66
2013-06-02	lycorn	NF	no factor from 2^64 to 2^65