1 788 539 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
197448826346792903	18	57.5	old
339204580775038346231	21	68.2	2020-12-01 22:42:13

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	108 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Ed Knapton	53BC036F05D700CD	0
Verified (Factored)	1999-03-01	Ethan O'Connor	53BC036F05D700CD	1747879

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	1E6BEC6AA4291C43	1	0	1	3
Verified (Factored)	2017-11-05	kkmrkkblmbrbk	1E6BEC6AA4291C43	1	513047	1	3
Verified	2020-12-02	mrh	D8AE630EA192804B	2	1678788	5	3

History

Date	User	Type	Result
2020-12-02	endless_mike	CERT	PRP Certification Proof certified good
2020-12-02	mrh	C-PRP	M1788539/197448826346792903/339204580775038346231 : D8AE630EA192804B PRP proof power = 7 PRP: Verified Proof certified good
2020-12-01	nordi	F-ECM	Factor: 339204580775038346231 / (ECM curve 1, B1=50000, B2=5000000, Sigma=7346816019865715)
2017-11-05	kkmrkkblmbrbk	C-PRP	M1788539/197448826346792903 : 1E6BEC6AA4291C43 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1788539/197448826346792903 : 1E6BEC6AA4291C43 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12