is 2 90890743 - 1
has 27360840 decimal digits
takes 329.226 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
Actual277336.757864.9351%6850006850003.59781.2802%340.355665.3840%0.4489%
PrimeNet2715.259961.9718%400000180000007.13725.5507%12.397164.0827%2.1108%
GPU7227584.188064.0000%600000200000008.70284.0620%92.890765.4623%1.4623%
Difference+2+252.5698+0.9351%+85000-19315000-5.1050-2.7818%+247.4648-0.0784%-0.0784%

Known prime factors (1 factor, 88.4 bits, 0.00009730% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
908907434176987544532037630446852892788.4332297806908967636908
22 × 3 × 43 × 179 × 19777 × 24967 × 50383
2019-03-1824967503831,252,1790.13840.2669

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2019-03-18T04:16:47Jwb52zClay6850006850002788.4333.598658.57.1961.280%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2010-06-04T09:56:00Carsten Kossendeyleela264265--0.041--
2010-07-07T09:40:00Carsten KossendeyManual testing265266--0.082--
2010-12-09T14:48:00Carsten KossendeyManual testing266267--0.164--
2011-01-04T22:34:00Carsten KossendeyManual testing267268--0.329--
2011-06-22T08:34:00Carsten KossendeyManual testing268269--0.658--
2014-04-05T09:32:00ITSLJCA_-_ServerStation269270--1.315--
2014-11-20T11:21:00RichD0Manual testing270271--2.631--
2016-05-02T10:21:44Carsten KossendeyManual testing271272--5.262--
2017-08-15T04:36:15Carsten KossendeyManual testing272273--10.52--
2018-12-09T18:19:23TheJudgerManual testing273274--21.05--
2018-12-09T18:19:23TheJudgerManual testing274275--42.09--
2018-12-09T18:19:23TheJudgerManual testing275276--84.19--
2019-01-20T16:51:07TheJudgerManual testing276277--168.4--


ECM factoring results:
No ECM results for M90890743


Lucas-Lehmer results:
No L-L results for M90890743


PRP results:
No PRP results for M90890743


P-1 factor-bounds graph:
B1 = 685000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
277
276
275
274
273
272
271
270
269
268
267
266
265
250
260
270
280
290
2100
Last modified: 2019-03-18T04:16:47+00:00