61 511 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
1968353	7	20.9	old
23251159	8	24.5	2008-08-26 20:08:56
539943559	9	29.0	2008-08-26 20:08:56
5689644479	10	32.4	2008-08-26 20:08:56
3292342320929	13	41.6	2008-08-26 20:08:56
33061343112372114530914171708608479	35	114.7	2019-03-04 10:57:08

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	588 / 4588

Estimated T-Level: 35.6 ⓘ

TF below 2^113 is very unlikely to find new factors due to ECM effort.

Status	Date	User	Residue	Number of known factors	Shift	Type	Base
Verified (Factored)	2017-09-21	Oliver Kruse	54FCAEEDB5AB2A32	5	0	1	3
Verified (Factored)	2017-09-21	Oliver Kruse	54FCAEEDB5AB2A32	5	0	1	3
Verified (Factored)	2017-11-06	kkmrkkblmbrbk	54FCAEEDB5AB2A32	5	47015	1	3
Verified	2019-03-04	Maciej Kmieciak	766C2233CB08F82E	6	34777	5	3
Verified	2019-03-05	marssystems	766C2233CB08F82E	6	6632	5	3

History

Date	User	Type	Result
2022-11-16	George Woltman	NF-PM1	B1=1000000000, B2=92348999993250
2022-11-10	George Woltman	NF-PM1	B1=1000000000
2021-04-26	ATH	NF-PP1	Start=2/7, B1=10000000, B2=1000000000
2021-04-15	Seth_Tr	NF-PM1	B1=400000000, B2=76400000000
2019-03-05	marssystems	C-PRP	M61511/1968353/23251159/539943559/5689644479/3292342320929/33061343112372114530914171708608479 : 766C2233CB08F82E PRP: Verified PRP without proof (small exponent)
2019-03-04	Maciej Kmieciak	C-PRP	M61511/1968353/23251159/539943559/5689644479/3292342320929/33061343112372114530914171708608479 : 766C2233CB08F82E PRP: Verified PRP without proof (small exponent)
2019-03-04	alex	F-ECM	Factor: 33061343112372114530914171708608479 / (ECM curve 13, B1=1000000, B2=100000000)
2017-11-06	kkmrkkblmbrbk	C-PRP	M61511/1968353/23251159/539943559/5689644479/3292342320929 : 54FCAEEDB5AB2A32 PRP: Verified PRP without proof (small exponent)
2017-09-21	Oliver Kruse	C-PRP	M61511/1968353/23251159/539943559/5689644479/3292342320929 : 54FCAEEDB5AB2A32 PRP: Verified PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M61511/1968353/23251159/539943559/5689644479/3292342320929 : 54FCAEEDB5AB2A32 PRP without proof (not generated)
2016-10-15	kkmrkkblmbrbk	NF-PM1	B1=100000000, B2=2000000000, E=12
2008-08-26	-Anonymous-	F	Factor: 3292342320929
2008-08-26	-Anonymous-	F	Factor: 5689644479
2008-08-26	-Anonymous-	F	Factor: 539943559
2008-08-26	-Anonymous-	F	Factor: 23251159