2 793 563 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
25698383040662730505487	23	74.4	2018-01-20 21:51:37

ECM

Digits	B1	Curves
25	50000	27 / 280

Estimated T-Level: 20.5 ⓘ

TF below 2^63 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Nick Bannon	ABD404F0FF457FEB	0
Verified (Factored)	1999-07-12	AndreyKiller	ABD404F0FF457FEB	1956866

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2018-01-21	Netanias	AC9C6799584D417D	1	2616518	5	3
Verified	2018-01-21	ATH	AC9C6799584D417D	1	2357797	5	3

History

Date	User	Type	Result
2023-04-17	Kevin_9611	NF-PM1	B1=480000, B2=616387590
2018-01-21	ATH	C-PRP	M2793563/25698383040662730505487 : AC9C6799584D417D PRP: Verified PRP without proof (not generated)
2018-01-21	Netanias	C-PRP	M2793563/25698383040662730505487 : AC9C6799584D417D PRP: Verified PRP without proof (not generated)
2018-01-20	Chang Chia-Tche	F-ECM	Factor: 25698383040662730505487 / (ECM curve 3, B1=50000, B2=5000000)
2017-10-19	Gordon Spence	NF	no factor from 2^66 to 2^67
2017-07-30	Joss	NF-PM1	B1=400000, B2=4000000, E=6
2016-05-06	Joss	NF-PM1	B1=200000, B2=3600000, E=6
2016-02-23	Mark Rose	NF	no factor from 2^1 to 2^60
2016-02-09	ramgeis	NF	no factor from 2^65 to 2^66
2015-04-21	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-04-21	VictordeHollander	NF	no factor from 2^63 to 2^64
2014-11-03	Joss	NF-PM1	B1=122976
2013-01-10	dbaugh	NF	no factor from 2^62 to 2^63
2012-03-07	Grant McCracken	NF	no factor from 2^61 to 2^62
2010-11-22	markr	NF-PM1	B1=100000, B2=2075000, E=6
2010-11-14	Joss	NF-PM1	B1=15000
2009-02-14	Sturle Sunde	NF	no factor from 2^60 to 2^61