18 531 277 Exponent Status

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GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

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Factored

Factor	Digits	Bits	Date
7605285242627411345273	22	72.7	2019-01-03 23:09:01

ECM

Digits	B1	Curves
25	50000	1 / 280

Estimated T-Level: 20.0 ⓘ

TF below 2^61 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Bad	2003-06-01	Herley Kindle Jr.	9281E5A481A2363D	14975217
Verified (Factored)	2007-02-20	Juergen Mueller	28A34A8A3F5D232E	17589563
Verified (Factored)	2009-03-03	SDSA	28A34A8A3F5D232E	11112747

History

Date	User	Type	Result
2019-01-03	Sergey Nosov	F-ECM	Factor: 7605285242627411345273 / (ECM curve 1, B1=50000, B2=5000000)
2018-02-02	ramgeis	NF	no factor from 2^68 to 2^69
2018-02-02	ramgeis	NF	no factor from 2^67 to 2^68
2014-08-10	Nesowa	NF	no factor from 2^66 to 2^67
2009-03-03	SDSA	C-LL	28A34A8A3F5D232E

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