is 2 90073891 - 1
has 27114944 decimal digits
takes 303.666 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
Actual276169.904964.4737%730000135050006.97093.4940%176.875865.7150%1.2413%
PrimeNet2715.307661.9718%360000180000006.45795.4732%11.765564.0532%2.0813%
GPU7227584.951564.0000%600000200000008.09994.0575%93.051365.4607%1.4607%
Difference+1+84.9534+0.4737%+130000-6495000-1.1290-0.5635%+83.8245+0.2543%+0.2543%

Known prime factors (1 factor, 80.8 bits, 0.00008966% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9007389120508556917943821631779432580.76311384296098601881
3 × 7 × 13 × 2591 × 6257 × 2572231
2018-12-30625725722314,708.00.71401.2795

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-02-25T21:36:02c10ck3rManual testing1000010000---0.049--0.075%
2018-12-30T19:41:34Jwb52zClay730000135050002580.7636.971607.313.943.494%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-04-10T06:08:00Carsten Kossendeyleela266267--0.166--
2009-05-25T09:50:00Carsten Kossendeyleela267268--0.332--
2010-03-13T14:49:00Carsten Kossendeydurandal268269--0.664--
2011-01-14T20:29:00Carsten KossendeyManual testing269270--1.327--
2015-01-06T05:27:00JakeWManual testing270271--2.655--
2015-01-19T09:02:00Carsten KossendeyManual testing271272--5.310--
2016-07-18T10:49:29Carsten KossendeyManual testing272273--10.62--
2017-11-19T11:03:18Carsten KossendeyManual testing273274--21.24--
2018-11-30T08:44:12S36049Manual testing274275--42.48--
2018-12-03T12:32:28S36049Manual testing275276--84.95--


ECM factoring results:
No ECM results for M90073891


Lucas-Lehmer results:
No L-L results for M90073891


PRP results:
No PRP results for M90073891


P-1 factor-bounds graph:
B1 = 730000, B2 = 13505000 (P-1 stage 2)
B1 = 730000 (P-1 stage 1)
B1 = 10000 (P-1 stage 1)
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108
TF factor-bounds graph:
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2100
Last modified: 2018-12-30T19:41:34+00:00