8 204 501 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
11571544313322353263	20	63.3	2011-08-14 13:11:14
125633591277100673183	21	66.8	2020-09-03 12:34:06

Status	Date	User	Residue	Shift
Verified (Factored)	1999-10-21	Thomas Johansson	0B2313A476AA68D3	7581239
Verified (Factored)	2002-09-22	Ars Technica Team Prime Rib	0B2313A476AA68D3	7138718

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2018-09-16	Xebecer	A663E7D6A7F56D31	1	5539431	5	3
Verified (Factored)	2020-03-06	oodaira	A663E7D6A7F56D31	1	2438849	5	3
Verified	2020-09-04	Xyzzy	A663E7D6A7F56D31	2	6908563	5	3

History

Date	User	Type	Result
2023-05-11	This -Anonymous-	NF-PM1	B1=100000, B2=2000000, E=6
2022-04-10	James Heinrich	NF	no factor from 2^65 to 2^66
2022-04-10	James Heinrich	NF	no factor from 2^64 to 2^65
2022-04-09	LordJulius	NF	no factor from 2^65 to 2^66
2022-04-09	LordJulius	NF	no factor from 2^64 to 2^65
2020-09-04	Ben Delo	CERT	PRP Certification Proof certified good
2020-09-04	Xyzzy	C-PRP	M8204501/11571544313322353263/125633591277100673183 : A663E7D6A7F56D31 PRP proof power = 8 PRP: Verified Proof certified good
2020-09-03	TJAOI	F	Factor: 125633591277100673183 / TF: 66-67
2020-03-06	oodaira	C-PRP	M8204501/11571544313322353263 : A663E7D6A7F56D31 PRP: Verified (Factored) PRP without proof (not generated)
2018-09-16	Xebecer	C-PRP	M8204501/11571544313322353263 : A663E7D6A7F56D31 PRP: Verified (Factored) PRP without proof (not generated)
2011-08-14	Carsten Kossendey	F	Factor: 11571544313322353263
2011-08-14	Carsten Kossendey	NF	no factor from 2^63 to 2^64