2 511 143 Exponent Status

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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Factored

Factor	Digits	Bits	Date
25062383129760159653023	23	74.4	2021-05-21 09:29:58

ECM

Digits	B1	Curves
25	50000	124 / 280

Estimated T-Level: 22.2 ⓘ

TF below 2^69 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Francois E Jaccard	443AAB09C358C485	0
Verified (Factored)		Robert Whetzel	443AAB09C358C485	0
Verified (Factored)	1999-03-15	Bjørn Roger Larsen	443AAB09C358C485	286149

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2021-05-24	Klaus Nordmann	302F9C76396D4679	1	132209	5	3

History

Date	User	Type	Result
2021-05-24	Ben Delo	CERT	PRP Certification Proof certified good
2021-05-24	Klaus Nordmann	C-PRP	M2511143/25062383129760159653023 : 302F9C76396D4679 PRP proof power = 7 PRP: Verified Proof certified good
2021-05-21	kutens	F-ECM	Factor: 25062383129760159653023 / (ECM curve 5, B1=50000, B2=5150000, Sigma=6511174266301545)
2019-05-13	TJAOI	NF	no factor from 2^67 to 2^68
2017-07-31	Gordon Spence	NF	no factor from 2^66 to 2^67
2016-02-24	mikr	NF-PM1	B1=3200000, B2=112000000, E=12
2016-02-23	Mark Rose	NF	no factor from 2^59 to 2^60
2015-11-05	ramgeis	NF	no factor from 2^65 to 2^66
2015-02-18	VictordeHollander	NF	no factor from 2^64 to 2^65
2015-02-18	VictordeHollander	NF	no factor from 2^63 to 2^64
2013-01-14	dbaugh	NF	no factor from 2^62 to 2^63
2012-06-12	Sebastian Hornbostel	NF	no factor from 2^61 to 2^62
2011-10-04	markr	NF-PM1	B1=165000, B2=3918750, E=6
2011-01-04	Joss	NF-PM1	B1=50000
2011-01-01	Joss	NF-PM1	B1=30000
2010-12-16	Joss	NF-PM1	B1=20000
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61