246 611 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
476665037901538872737208523676143481	36	118.5	2013-10-13 01:39:11

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	455 / 640

Estimated T-Level: 28.6 ⓘ

TF below 2^90 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Shift
Verified (Factored)		David Slowinski	6AD1	0
Verified (Factored)		Unknown	6AD1	0
Verified (Factored)		Ken Kiefer	AAC1FA6693ABEAD1	0
Verified (Factored)		Brian J. Beesley	AAC1FA6693ABEAD1	0
Verified (Factored)		Eivind Triel	AAC1FA6693ABEAD1	80432

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified	2017-09-22	Oliver Kruse	17F6F878686CC392	1	0	1	3
Verified	2017-10-12	Oliver Kruse	17F6F878686CC392	1	48885	1	3
Verified	2017-11-06	kkmrkkblmbrbk	17F6F878686CC392	1	7417	1	3
Verified	2020-04-17	Oliver Kruse	E389734CFFD92619	1	78077	5	3
Verified	2024-02-03	Wentao Huang	E389734CFFD92619	1	132203	5	3

P-1 factors

Date	Factor	B1	B2
2013-10-13	476665037901538872737208523676143481	2595000	75255000

History

Date	User	Type	Result
2024-02-03	Naegi Makoto	CERT	PRP Certification Proof certified good
2024-02-03	Wentao Huang	C-PRP	M246611/476665037901538872737208523676143481 : E389734CFFD92619 PRP proof power = 5 PRP: Verified Proof certified good
2022-04-14	Oliver Kruse	NF-PM1	B1=30000000, B2=10120247026890
2022-03-07	LordJulius	NF	no factor from 2^57 to 2^58
2022-03-07	LordJulius	NF	no factor from 2^54 to 2^55
2021-08-01	Oliver Kruse	NF-PM1	B1=30000000, B2=3000000000, E=24
2020-04-17	Oliver Kruse	C-PRP	M246611/476665037901538872737208523676143481 : E389734CFFD92619 PRP: Verified PRP without proof (small exponent)
2017-11-06	kkmrkkblmbrbk	C-PRP	M246611/476665037901538872737208523676143481 : 17F6F878686CC392 PRP: Verified PRP without proof (small exponent)
2017-10-12	Oliver Kruse	C-PRP	M246611/476665037901538872737208523676143481 : 17F6F878686CC392 PRP: Verified PRP without proof (small exponent)
2017-09-22	Oliver Kruse	C-PRP	M246611/476665037901538872737208523676143481 : 17F6F878686CC392 PRP: Verified PRP without proof (not generated)
2017-09-22	Oliver Kruse	C-PRP	M246611/476665037901538872737208523676143481 : 17F6F878686CC392 PRP without proof (not generated)
2013-10-13	David Campeau	F-PM1	Factor: 476665037901538872737208523676143481
2013-07-18	lycorn	NF	no factor from 2^60 to 2^61
2012-02-26	Joss	NF-PM1	B1=2550684
2011-07-24	Joss	NF-PM1	B1=2040547
2011-02-07	Joss	NF-PM1	B1=2000000
2009-01-06	Sturle Sunde	NF	no factor from 2^59 to 2^60
2009-01-01	Sturle Sunde	NF	no factor from 2^58 to 2^59