is 2 102885221 - 1
has 30971538 decimal digits
takes 409.648 GHz-days to do one PRP test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual276148.748264.4737%12000007320000029.57535.1426%178.323569.6163%7.1163%
PrimeNet2729.295262.5000%450000220000009.37655.3829%18.671667.8829%5.3829%
GPU72276148.748264.4737%6500002200000010.46823.8538%159.216468.3275%3.8538%
Difference---+550000+51200000+19.1071+1.2889%+19.1071+1.2889%+1.2889%

Known prime factors (1 factor, 116.7 bits, 0.00011346% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
10288522113835003857729066882551068716752328936116.736672351369966395216400957564
22 × 3 × 8597 × 32191 × 121607 × 469331 × 3547283
2021-03-0546933135472831.672e+93.67785.5145

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-03-05T23:01:12Runtime ErrorManual testing12000007320000036116.73629.58819.359.155.143%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-04-25T01:08:001997rj7compa263264--0.019--
2010-08-21T07:59:00garonorth264265--0.036--
2012-04-25T18:02:00OS1Tina265266--0.073--
2013-09-09T11:10:00JoDuManual testing266267--0.145--
2014-05-12T07:18:00g0bManual testing267268--0.291--
2014-07-23T01:59:00Preben SManual testing268269--0.581--
2014-08-25T07:29:00g0bManual testing269270--1.162--
2014-10-20T23:44:00PascalBieriManual testing270271--2.324--
2014-12-13T00:21:00shaugeManual testing271272--4.648--
2020-01-26T14:08:53Architects CubedManual testing272273--9.297--
2020-01-27T11:35:17Hans LoeblichManual testing273274--18.59--
2020-10-06T07:48:04ktonyGPU72_TF274275--37.19--
2020-10-06T08:24:03ktonyGPU72_TF275276--74.37--


ECM factoring results:
Exponent "102885221" not found


Lucas-Lehmer results:
Exponent "102885221" not found


PRP results:
Exponent "102885221" not found


P-1 factor-bounds graph:
B1 = 1200000, B2 = 73200000 (stage 2)
B1 = 1200000 (stage 1)
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104
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108
TF factor-bounds graph:
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Last modified: 2021-03-05T23:01:12+00:00