is 2 11710183 - 1
has 3525117 decimal digits
takes 4.508 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L250AE2E48FA09961double-checked
PRP63237B6932EF8C15PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27281.666866.6667%200000081404466025.81488.5550%107.481769.5183%2.8517%
PrimeNet2640.304062.5000%5000015000000.07204.0314%0.376064.0118%1.5118%
GPU722685.090064.7059%8000020000000.10312.9303%5.193165.7401%1.0342%
Difference+4+76.5768+1.9608%+1920000+812044660+25.7118+5.6247%+102.2886+3.7782%+1.8174%

Known prime factors (1 factor, 124.1 bits, 0.00105954% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
117101832238048125452755650174022123905821143138124.074955599124903836110065069915605
3 × 5 × 7 × 61 × 6211 × 43649 × 187861 × 534857 × 5477047
2021-12-2453485754770471.408e+100.44890.6077

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2000-12-07T00:00:00blimeyv4_computers180000180000---0.100--0.875%
2016-05-13T01:03:12mognutsManual testing12000024300006---0.137--2.071%
2016-05-15T16:29:30mognutsManual testing12000024300006---0.137--2.071%
2021-12-24T13:00:09Architects Cubedazure1200000081404466038124.07425.819.01751.638.555%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-03-27T00:00:00ANONYMOUSv4_computers21258--0.003--
2000-04-05T00:00:00ANONYMOUSv4_computers21264--0.304--
2013-10-29T14:16:00lycornManual testing264265--0.319--
2013-11-26T06:19:00NesowaManual testing265266--0.638--
2016-02-08T20:53:20VictordeHollanderManual testing266267--1.276--
2018-01-18T22:59:04ramgeisManual testing267268--2.553--
2018-01-18T22:59:04ramgeisManual testing268269--5.105--
2021-08-07T06:04:28SRBaseManual testing269270--10.21--
2021-08-15T07:40:41SRBaseManual testing270271--20.42--
2021-10-31T18:34:02SRBaseManual testing271272--40.84--


ECM factoring results:
Total ECM effort:1.171 GHz-days
Estimated T-Level:0.385
DigitsB1CompleteFacMiss
20110000.07792.596%
25500000.00799.291%


ECM Summary

B1B2factorcurvesGHz-days
50000500000021.171


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2001-02-25T00:00:00blimeyv4_computers250AE2E48FA099614.508
2004-08-06T00:00:00ANONYMOUSv4_computers250AE2E48FA099614.508


PRP results:
dateuseridcompidcofactorsres64PRP
2021-12-30T07:58:30LaurVZero818
22380481254527556501740221239058211431
63237B6932EF8C15no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 814044660 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 120000, B2 = 2430000 (P-1 stage 2)
B1 = 180000 (P-1 stage 1)
B1 = 120000 (P-1 stage 1)
104
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107
104
105
106
107
108
109
TF factor-bounds graph:
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258
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Last modified: 2021-12-30T07:58:30+00:00