1 811 Exponent Status

Great Internet Mersenne Prime Search
GIMPS
Finding World Record Primes Since 1996

PrimeNet Exponent Status

M_n

Status

Details

Composite, with 5 known prime factors. Cofactor is composite.

Factored

Factor	Digits	Bits	Date
3623	4	11.8	old
499730013403129543	18	58.8	old
18919140513005028440611484452976550931864929199207	50	163.7	2008-11-22 12:25:26
2109805118252160769153368014962148291485401194175487	52	170.5	2019-10-28 23:22:51
1627762746968038684004893147072284141682536012562617241927	58	190.1	2019-10-31 20:17:48

ECM

Digits	B1	Curves
25	50000	280 / 280
30	250000	640 / 640
35	1000000	1566 / 1566
40	3000000	4588 / 4588
45	11000000	9201 / 9201
50	44000000	16550 / 16550
55	110000000	40830 / 40830
60	260000000	105362 / 105362
65	800000000	84863 / 194238

Estimated T-Level: 62.2 ⓘ

TF below 2^202 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	BD772D05D507A7D5	3	0	1	3
Verified (Factored)	2017-10-02	kkmrkkblmbrbk	BD772D05D507A7D5	3	0	1	3
Verified (Factored)	2017-12-07	ATH	BD772D05D507A7D5	3	1609	1	3
Verified (Factored)	2019-10-29	nordi	93F52C42D61D3A89	4	1463	5	3
Verified (Factored)	2019-10-29	loader3229	93F52C42D61D3A89	4	731	5	3
Verified (Factored)	2019-10-29	mnd9	93F52C42D61D3A89	4	1563	5	3
Verified	2019-10-31	nordi	93F52C42D61D3A89	5	319	5	3
Verified	2019-11-02	_p95holder_	93F52C42D61D3A89	5	171	5	3
Verified	2019-11-03	fre_games	93F52C42D61D3A89	5	1074	5	3
Verified	2020-04-17	Oliver Kruse	93F52C42D61D3A89	5	516	5	3
Verified (Factored)	2022-05-12	Jorge Coveiro	93F52C42D61D3A89	1	70	5	3

History

Date	User	Type	Result
2022-10-09	mikr	NF-PM1	B1=400000000000, B2=1310778031989756330
2022-05-12	Jorge Coveiro	C-PRP	M1811/3623 : 93F52C42D61D3A89 PRP: Verified (Factored) PRP without proof (small exponent)
2021-12-17	firejuggler	NF-PM1	B1=40840606334, B2=37221820308052380
2021-07-24	ViliamF	NF-PP1	Start=2/7, B1=1000000000, B2=221000000000
2020-04-17	Oliver Kruse	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207/2109805118252160769153368014962148291485401194175487/1627762746968038684004893147072284141682536012562617241927 : 93F52C42D61D3A89 PRP: Verified (Factored) PRP without proof (small exponent)
2019-11-03	fre_games	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207/2109805118252160769153368014962148291485401194175487/1627762746968038684004893147072284141682536012562617241927 : 93F52C42D61D3A89 PRP: Verified (Factored) PRP without proof (small exponent)
2019-11-02	_p95holder_	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207/2109805118252160769153368014962148291485401194175487/1627762746968038684004893147072284141682536012562617241927 : 93F52C42D61D3A89 PRP: Verified (Factored) PRP without proof (small exponent)
2019-10-31	nordi	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207/2109805118252160769153368014962148291485401194175487/1627762746968038684004893147072284141682536012562617241927 : 93F52C42D61D3A89 PRP: Verified (Factored) PRP without proof (small exponent)
2019-10-31	Ryan Propper	F-ECM	Factor: 1627762746968038684004893147072284141682536012562617241927 / (ECM curve 1, B1=260000000)
2019-10-29	mnd9	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207/2109805118252160769153368014962148291485401194175487 : 93F52C42D61D3A89 PRP: Verified (Factored) PRP without proof (small exponent)
2019-10-29	loader3229	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207/2109805118252160769153368014962148291485401194175487 : 93F52C42D61D3A89 PRP: Verified (Factored) PRP without proof (small exponent)
2019-10-29	nordi	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207/2109805118252160769153368014962148291485401194175487 : 93F52C42D61D3A89 PRP: Verified (Factored) PRP without proof (small exponent)
2019-10-28	Ryan Propper	F-ECM	Factor: 2109805118252160769153368014962148291485401194175487 / (ECM curve 1, B1=110000000)
2017-12-07	ATH	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207 : BD772D05D507A7D5 PRP: Verified (Factored) PRP without proof (small exponent)
2017-10-02	kkmrkkblmbrbk	C-PRP	M1811/3623/499730013403129543/18919140513005028440611484452976550931864929199207 : BD772D05D507A7D5 PRP: Verified (Factored) PRP without proof (not generated)
2017-09-21	Oliver Kruse	C-PRP	M1811/known_factors : BD772D05D507A7D5 PRP without proof (not generated)
2016-09-07	kkmrkkblmbrbk	NF-PM1	B1=1000000000, B2=100000000000, E=12
2008-11-22	-Anonymous-	F-ECM	Factor: 18919140513005028440611484452976550931864929199207