is 2 91221769 - 1
has 27460489 decimal digits
takes 330.426 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual277335.535864.9351%6950006950003.65031.2894%339.186065.3872%0.4521%
PrimeNet2715.240861.9718%400000180000007.13725.5531%12.378164.0836%2.1118%
GPU7227583.882564.0000%600000220000009.27514.1368%93.157565.4893%1.4893%
Difference+2+251.6533+0.9351%+95000-21305000-5.6248-2.8475%+246.0285-0.1021%-0.1021%

Known prime factors (1 factor, 81.8 bits, 0.00008964% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9122176941152547309494187392204092581.76722556319484165116
22 × 3 × 13 × 17 × 193 × 1249 × 2837 × 12437
2019-04-192837124379,524.00.01760.0303

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-04-19T13:22:15Jwb52zClay6950006950002581.7673.650660.97.3011.289%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-12-29T01:50:00Architects Cubedm1_73264265--0.041--
2013-03-24T09:30:00AxelssonManual testing265266--0.082--
2014-04-05T00:32:00SMoffatManual testing266267--0.164--
2014-04-05T06:15:00hkskypManual testing267268--0.328--
2014-04-05T06:30:00hkskypManual testing268269--0.655--
2014-04-05T06:59:00hkskypManual testing269270--1.311--
2014-11-20T00:12:00shaugeManual testing270271--2.621--
2017-03-02T22:11:07monstManual testing271272--5.243--
2018-02-17T18:31:54RichD0Manual testing272273--10.49--
2018-02-20T05:18:40gcardonaManual testing273274--20.97--
2018-12-16T22:36:18TheJudgerManual testing274275--41.94--
2018-12-16T22:36:18TheJudgerManual testing275276--83.88--
2019-03-03T17:40:57TheJudgerManual testing276277--167.8--


ECM factoring results:
No ECM results for M91221769


Lucas-Lehmer results:
No L-L results for M91221769


PRP results:
No PRP results for M91221769


P-1 factor-bounds graph:
B1 = 695000 (P-1 stage 1)
102
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104
105
106
102
103
104
105
106
TF factor-bounds graph:
277
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275
274
273
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271
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265
250
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2100
Last modified: 2019-04-19T13:22:15+00:00