2 703 671 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
2606220044107362604807	22	71.1	2009-03-08 19:26:29

ECM

Digits	B1	Curves
25	50000	3 / 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)	1998-05-08	Joshua Cope	29B2E00309F4CE60	0
Verified (Factored)	1998-05-08	Robert Eals	29B2E00309F4CE60	0
Verified (Factored)	1999-04-23	Martijn Otto	29B2E00309F4CE60	361471

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-19	Oliver Kruse	0A358E43DB5B1DB0	1	981805	5	3
Verified	2017-12-04	kkmrkkblmbrbk	0A358E43DB5B1DB0	1	2062069	5	3

History

Date	User	Type	Result
2023-01-26	USAFSS	NF-PM1	B1=288000, B2=261254070
2017-12-04	kkmrkkblmbrbk	C-PRP	M2703671/2606220044107362604807 : 0A358E43DB5B1DB0 PRP: Verified PRP without proof (not generated)
2017-10-19	Oliver Kruse	C-PRP	M2703671/2606220044107362604807 : 0A358E43DB5B1DB0 PRP: Verified PRP without proof (not generated)
2009-03-08	S36049	F-ECM	Factor: 2606220044107362604807
2009-01-30	Sturle Sunde	NF	no factor from 2^60 to 2^61