2 808 107 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
1249319778416287	16	50.2	old
228131502345319020743	21	67.6	2022-08-21 05:21:35
34629566657233801103447449	26	84.8	2022-08-21 05:21:35

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)	2017-10-21	alpertron	A1C54B554D07C0FF	1	2097593	5	3
Verified (Factored)	2017-11-16	Oliver Kruse	A1C54B554D07C0FF	1	1547943	5	3
Verified	2022-08-21	LordJulius	A1C54B554D07C0FF	3	957167	5	3

P-1 factors

Date	Factor	B1	B2
2022-08-21	7900095067082114257729144052680503930041434607	288000	226423890

History

Date	User	Type	Result
2022-08-21	curtisc	CERT	PRP Certification Proof certified good
2022-08-21	LordJulius	C-PRP	M2808107/1249319778416287/228131502345319020743/34629566657233801103447449 : A1C54B554D07C0FF PRP proof power = 7 PRP: Verified Proof certified good
2022-08-21	USAFSS	F-PM1	Factor: 7900095067082114257729144052680503930041434607 / (P-1, B1=288000, B2=226423890)
2017-11-16	Oliver Kruse	C-PRP	M2808107/1249319778416287 : A1C54B554D07C0FF PRP: Verified (Factored) PRP without proof (not generated)
2017-10-21	alpertron	C-PRP	M2808107/1249319778416287 : A1C54B554D07C0FF PRP: Verified (Factored) PRP without proof (not generated)