4 995 581 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
29973487	8	24.8	old
111182595756092431849	21	66.6	2019-09-05 06:27:21

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	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-20	kkmrkkblmbrbk	E2F8C4AD223DB0A3	1	0	1	3
Verified (Factored)	2018-04-23	Ducho_YYZ	E2F8C4AD223DB0A3	1	1148621	1	3
Verified	2019-09-06	mnd9	58579DE1C0023637	2	3897281	5	3
Verified	2019-09-12	roemer2201	58579DE1C0023637	2	1987542	5	3

History

Date	User	Type	Result
2023-12-16	USAFSS	NF-PM1	B1=256000, B2=105522060
2019-09-12	roemer2201	C-PRP	M4995581/29973487/111182595756092431849 : 58579DE1C0023637 PRP: Verified PRP without proof (not generated)
2019-09-06	mnd9	C-PRP	M4995581/29973487/111182595756092431849 : 58579DE1C0023637 PRP: Verified PRP without proof (not generated)
2019-09-05	_p95holder_	F-ECM	Factor: 111182595756092431849 / (ECM curve 1, B1=50000, B2=5000000)
2018-04-23	Ducho_YYZ	C-PRP	M4995581/29973487 : E2F8C4AD223DB0A3 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4995581/29973487 : E2F8C4AD223DB0A3 PRP: Verified PRP without proof (not generated)