1 900 369 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
2078714829913	13	40.9	old
1355666902459889	16	50.3	2014-05-23 11:39:07
826858248426205165991	21	69.5	2020-08-14 06:49:58

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-04	Oliver Kruse	A5207D2DF5363267	2	0	1	3
Verified (Factored)	2017-11-09	kkmrkkblmbrbk	A5207D2DF5363267	2	823227	1	3
Verified	2020-08-14	M Miller	DCCA4788C7C7E604	3	1457380	5	3

History

Date	User	Type	Result
2021-06-29	Dylan Delgado	NF-PM1	B1=2000000, B2=262000000
2021-04-06	Dylan Delgado	NF-PM1	B1=1000000, B2=71000000
2020-08-14	Valerio Bellizzomi	CERT	PRP Certification Proof certified good
2020-08-14	M Miller	C-PRP	M1900369/2078714829913/1355666902459889/826858248426205165991 : DCCA4788C7C7E604 PRP proof power = 7 PRP: Verified Proof certified good
2020-08-14	_p95holder_	F-ECM	Factor: 826858248426205165991 / (ECM curve 2, B1=50000, B2=5000000)
2017-11-09	kkmrkkblmbrbk	C-PRP	M1900369/2078714829913/1355666902459889 : A5207D2DF5363267 PRP: Verified (Factored) PRP without proof (not generated)
2017-10-04	Oliver Kruse	C-PRP	M1900369/2078714829913/1355666902459889 : A5207D2DF5363267 PRP: Verified (Factored) PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2014-05-23	TJAOI	F	Factor: 1355666902459889