3 881 093 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
19883887334111	14	44.2	old
973375876003774997777	21	69.7	2018-11-20 19:12:49

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	2AF0901CD2F99EA9	1	0	1	3
Verified (Factored)	2017-12-26	Oliver Kruse	2AF0901CD2F99EA9	1	3866514	1	3
Verified	2018-11-20	rucio	15EEA640B459E692	2	3766742	5	3
Verified	2018-11-21	kkmrkkblmbrbk	15EEA640B459E692	2	2958838	5	3

History

Date	User	Type	Result
2022-05-16	Joss	NF-PM1	B1=500000, B2=130364850
2022-04-17	Joss	NF-PM1	B1=200000
2022-03-16	Joss	NF	no factor from 2^67 to 2^68
2018-11-21	kkmrkkblmbrbk	C-PRP	M3881093/19883887334111/973375876003774997777 : 15EEA640B459E692 PRP: Verified PRP without proof (not generated)
2018-11-20	rucio	C-PRP	M3881093/19883887334111/973375876003774997777 : 15EEA640B459E692 PRP: Verified PRP without proof (not generated)
2018-11-20	ATH	F-ECM	Factor: 973375876003774997777 / (ECM curve 3, B1=50000, B2=5000000)
2017-12-26	Oliver Kruse	C-PRP	M3881093/19883887334111 : 2AF0901CD2F99EA9 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M3881093/19883887334111 : 2AF0901CD2F99EA9 PRP: Verified PRP without proof (not generated)