1 649 797 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
9898783	7	23.2	old
3441476543	10	31.7	2008-07-15 07:44:48
526374332039	12	38.9	2008-07-15 07:44:48
37091156631210649938703	23	75.0	2019-01-24 12:37:07

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-02	Oliver Kruse	ED7B899AF7EE2557	3	0	1	3
Verified (Factored)	2017-11-02	kkmrkkblmbrbk	ED7B899AF7EE2557	3	1102925	1	3
Verified	2019-01-24	ATH	0A5F545CD115138E	4	806982	5	3
Verified	2019-01-25	kkmrkkblmbrbk	0A5F545CD115138E	4	366657	5	3

History

Date	User	Type	Result
2019-01-25	kkmrkkblmbrbk	C-PRP	M1649797/9898783/3441476543/526374332039/37091156631210649938703 : 0A5F545CD115138E PRP: Verified PRP without proof (not generated)
2019-01-24	ATH	C-PRP	M1649797/9898783/3441476543/526374332039/37091156631210649938703 : 0A5F545CD115138E PRP: Verified PRP without proof (not generated)
2019-01-24	Chang Chia-Tche	F-ECM	Factor: 37091156631210649938703 / (ECM curve 1, B1=50000, B2=5000000)
2017-11-02	kkmrkkblmbrbk	C-PRP	M1649797/9898783/3441476543/526374332039 : ED7B899AF7EE2557 PRP: Verified PRP without proof (not generated)
2017-10-02	Oliver Kruse	C-PRP	M1649797/9898783/3441476543/526374332039 : ED7B899AF7EE2557 PRP: Verified PRP without proof (not generated)
2016-03-17	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2008-07-15	J Feitsma	F	Factor: 526374332039
2008-07-15	J Feitsma	F	Factor: 3441476543