2 153 089 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
7276973538259370831	19	62.7	2009-01-06 15:17:14
949003684193299011143	21	69.7	2023-04-07 18:50:20

ECM

Digits	B1	Curves
25	50000	107 / 280

Estimated T-Level: 21.9 ⓘ

TF below 2^68 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		Bob Farrington	350757D66BB29963	0
Verified (Factored)	1999-02-14	Doug Wiltse	350757D66BB29963	1238207

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-10-08	Oliver Kruse	248343F0CA8A4835	1	0	1	3
Verified (Factored)	2017-11-18	kkmrkkblmbrbk	248343F0CA8A4835	1	235377	1	3
Verified	2023-04-11	retsu	41A70B26494FEA15	2	327614	5	3
Verified	2023-04-13	Oliver Kruse	41A70B26494FEA15	2	1873906	5	3

History

Date	User	Type	Result
2023-04-13	Section 31	CERT	PRP Certification Proof certified good
2023-04-13	Oliver Kruse	C-PRP	M2153089/7276973538259370831/949003684193299011143 : 41A70B26494FEA15 PRP proof power = 7 PRP: Verified Proof certified good
2023-04-11	retsu	C-PRP	M2153089/7276973538259370831/949003684193299011143 : 41A70B26494FEA15 PRP: Verified PRP without proof (not generated)
2023-04-07	SmithMichae2	F-ECM	Factor: 949003684193299011143 / (ECM curve 5, B1=50000, B2=7050000, Sigma=8234554809860184)
2022-03-09	LordJulius	NF	no factor from 2^1 to 2^60
2017-11-18	kkmrkkblmbrbk	C-PRP	M2153089/7276973538259370831 : 248343F0CA8A4835 PRP: Verified PRP without proof (not generated)
2017-10-08	Oliver Kruse	C-PRP	M2153089/7276973538259370831 : 248343F0CA8A4835 PRP: Verified PRP without proof (not generated)
2016-03-25	alpertron	NF-PM1	B1=500000, B2=15000000, E=12
2009-01-06	axn	F-ECM	Factor: 7276973538259370831
2009-01-04	Sturle Sunde	NF	no factor from 2^60 to 2^61