15 053 729 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
1921876601335398300430087	25	80.7	2022-05-26 17:19:41

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)	2002-05-25	Peter MacDonald	D81EA1FB5929FCA5	10858078
Verified (Factored)	2006-06-13	Eric Bravick	D81EA1FB5929FCA5	13996682

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2023-06-12	Perig	BA54804DB08D40AD	1	11831335	5	3

History

Date	User	Type	Result
2023-11-04	nordi	NF-PM1	B1=569000, B2=561249150
2023-10-21	nordi	NF-PM1	B1=569000
2023-06-12	bonnenberger	CERT	PRP Certification Proof certified good
2023-06-12	Perig	C-PRP	M15053729/1921876601335398300430087 : BA54804DB08D40AD PRP proof power = 8 PRP: Verified Proof certified good
2022-05-26	ATH	F-PP1	Start=2/7, B1=1000000, B2=29000000, Factor: 1921876601335398300430087
2022-03-06	Markus K.	NF	no factor from 2^72 to 2^73
2021-10-09	-Anonymous-	NF	no factor from 2^71 to 2^72
2021-09-05	SRBase	NF	no factor from 2^70 to 2^71
2020-07-14	Yxinity	NF	no factor from 2^69 to 2^70
2017-10-04	ramgeis	NF	no factor from 2^68 to 2^69
2016-02-07	mikr	NF	no factor from 2^67 to 2^68
2015-07-12	Tha	NF-PM1	B1=300000, B2=6000000, E=12
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