6 329 887 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
2545520850773129686971337	25	81.1	2019-12-25 02:04:16

ECM

Digits	B1	Curves
25	50000	6 / 280

Estimated T-Level: 20.1 ⓘ

TF below 2^62 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)	1999-06-15	Valerie Menissier-Morain	3938BB06C49745DC	0
Verified (Factored)	2001-02-25	Alastair Knox	3938BB06C49745DC	4357914

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2019-12-25	Niels_Mache_Nextcloud	32CACF8E470F0F13	1	2136127	5	3
Verified	2019-12-26	mnd9	32CACF8E470F0F13	1	3575292	5	3

P-1 factors

Date	Factor	B1	B2
2019-12-25	2545520850773129686971337	600000	12000000

History

Date	User	Type	Result
2019-12-26	mnd9	C-PRP	M6329887/2545520850773129686971337 : 32CACF8E470F0F13 PRP: Verified PRP without proof (not generated)
2019-12-25	Niels_Mache_Nextcloud	C-PRP	M6329887/2545520850773129686971337 : 32CACF8E470F0F13 PRP: Verified PRP without proof (not generated)
2019-12-25	takahashi	F-PM1	Factor: 2545520850773129686971337 / (P-1, B1=600000, B2=12000000, E=12)
2018-06-04	ramgeis	NF	no factor from 2^67 to 2^68
2016-03-25	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-23	Mark Rose	NF	no factor from 2^62 to 2^63
2015-10-19	snme2pm1	NF	no factor from 2^65 to 2^66
2014-08-23	lycorn	NF	no factor from 2^64 to 2^65
2014-08-17	Nesowa	NF	no factor from 2^63 to 2^64
2013-04-29	Squeeky_Squirrel	NF-PM1	B1=120000, B2=2370000, E=6
2009-06-14	Carsten Kossendey	NF-PM1	B1=35000, B2=481250