1 254 541 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
4588026375605865391	19	62.0	2011-05-09 14:41:57

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	104 / 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)		Robert Clark	EA42828444EA32CC	0
Verified (Factored)		Cornelius Caesar	EA42828444EA32CC	0
Verified (Factored)		Brian J. Beesley	EA42828444EA32CC	65411

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-29	Oliver Kruse	E8D58A235514C069	1	0	1	3
Verified	2017-10-20	kkmrkkblmbrbk	E8D58A235514C069	1	1067188	1	3

History

Date	User	Type	Result
2022-03-07	LordJulius	NF	no factor from 2^58 to 2^60
2017-10-20	kkmrkkblmbrbk	C-PRP	M1254541/4588026375605865391 : E8D58A235514C069 PRP: Verified PRP without proof (not generated)
2017-09-29	Oliver Kruse	C-PRP	M1254541/4588026375605865391 : E8D58A235514C069 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=300000, B2=10000000, E=12
2011-05-09	Xyzzy	F-ECM	Factor: 4588026375605865391
2009-02-16	Sturle Sunde	NF	no factor from 2^60 to 2^61