4 881 187 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
107259134801383	15	46.6	old
41280923176965947543	20	65.2	2018-07-04 08:49:22

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	65EB3C0683EFCFD3	1	0	1	3
Verified (Factored)	2018-04-02	Oliver Kruse	65EB3C0683EFCFD3	1	2700095	1	3
Verified	2018-07-06	_p95holder_	872CE372FF25D3C6	2	1203023	5	3
Verified	2018-07-07	Battlemaxx	872CE372FF25D3C6	2	2684966	5	3

History

Date	User	Type	Result
2023-08-31	USAFSS	NF-PM1	B1=256000, B2=105522060
2018-07-07	Battlemaxx	C-PRP	M4881187/107259134801383/41280923176965947543 : 872CE372FF25D3C6 PRP: Verified PRP without proof (not generated)
2018-07-06	_p95holder_	C-PRP	M4881187/107259134801383/41280923176965947543 : 872CE372FF25D3C6 PRP: Verified PRP without proof (not generated)
2018-07-04	TJAOI	F	Factor: 41280923176965947543 / TF: 65-66
2018-04-02	Oliver Kruse	C-PRP	M4881187/107259134801383 : 65EB3C0683EFCFD3 PRP: Verified PRP without proof (not generated)
2017-09-20	kkmrkkblmbrbk	C-PRP	M4881187/107259134801383 : 65EB3C0683EFCFD3 PRP: Verified PRP without proof (not generated)