1 752 721 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
877329968106781751	18	59.6	old
6051948874329859182911	22	72.4	2020-07-20 13:08:06
38074769690949935730569	23	75.0	2019-07-22 11:17:26

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	Shift
Verified (Factored)		Ronnie VanDommelen	C31FE037E07D8361	0
Bad	1998-12-13	Stephen Wood	024E18C7DAE9F9B9	1628232
Verified (Factored)	1999-06-06	Nayan Hajratwala	C31FE037E07D8361	1419752

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-03	Oliver Kruse	36053C2EE70780ED	1	0	1	3
Verified (Factored)	2017-11-03	kkmrkkblmbrbk	36053C2EE70780ED	1	1635147	1	3
Verified (Factored)	2019-07-23	Niels_Mache_Nextcloud	4FE85C01D57AD320	2	1330129	5	3
Verified (Factored)	2019-07-24	arnaud	4FE85C01D57AD320	2	1315175	5	3
Verified	2020-07-20	M Miller	4FE85C01D57AD320	3	783230	5	3

History

Date	User	Type	Result
2020-07-20	M Miller	C-PRP	M1752721/877329968106781751/38074769690949935730569/6051948874329859182911 : 4FE85C01D57AD320 PRP: Verified PRP without proof (not generated)
2020-07-20	TJAOI	F-ECM	Factor: 6051948874329859182911 / (ECM curve 2, B1=50000, B2=5000000)
2019-07-24	arnaud	C-PRP	M1752721/877329968106781751/38074769690949935730569 : 4FE85C01D57AD320 PRP: Verified PRP without proof (not generated)
2019-07-23	Niels_Mache_Nextcloud	C-PRP	M1752721/877329968106781751/38074769690949935730569 : 4FE85C01D57AD320 PRP: Verified PRP without proof (not generated)
2019-07-22	Chang Chia-Tche	F-ECM	Factor: 38074769690949935730569 / (ECM curve 3, B1=50000, B2=5000000)
2017-11-03	kkmrkkblmbrbk	C-PRP	M1752721/877329968106781751 : 36053C2EE70780ED PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1752721/877329968106781751 : 36053C2EE70780ED PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12