1 782 839 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
385354906656477957623	21	68.4	2015-02-12 19:25:22

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	107 / 640

Estimated T-Level: 25.8 ⓘ

TF below 2^81 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Harvey Miller	7522D5135075E542	0
Verified (Factored)	1999-01-17	Roger Smith	7522D5135075E542	14872

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-10-03	Oliver Kruse	35C7E4037B81C70B	1	0	1	3
Verified	2017-11-04	ATH	35C7E4037B81C70B	1	1194276	1	3

History

Date	User	Type	Result
2017-11-04	ATH	C-PRP	M1782839/385354906656477957623 : 35C7E4037B81C70B PRP: Verified PRP without proof (not generated)
2017-10-03	Oliver Kruse	C-PRP	M1782839/385354906656477957623 : 35C7E4037B81C70B PRP: Verified PRP without proof (not generated)
2016-03-16	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2015-02-12	Chang Chia-Tche	F-ECM	Factor: 385354906656477957623 / (ECM curve 1, B1=50000, B2=5000000)
2014-09-19	Joss	NF-PM1	B1=172002
2014-05-09	Joss	NF-PM1	B1=136001
2014-04-10	-Anonymous-	NF-PM1	B1=100000
2011-02-07	Carsten Kossendey	NF-PM1	B1=95000, B2=1615000, E=6
2010-10-16	GrunwalderGIMP	NF	no factor from 2^1 to 2^63
2010-04-20	Architects Cubed	NF	no factor from 2^60 to 2^61