is 2 90728369 - 1
has 27311961 decimal digits
takes 305.872 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual277337.360564.9351 %685000121587506.40443.0754 %343.764866.0135 %
Target27584.338764.0000 %60000010000000029.40654.0611 %113.745165.4620 %
Difference+2+253.0218+0.9351 %+85000-87841250-23.0021-0.9857 %+230.0197+0.5515 %

Known prime factors (1 factor, 82.9 bits, 0.00009138% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9072836990788923274820668745915112582.90950033371191110395
5 × 11 × 3253 × 389527 × 717919
2019-03-0938952771791920,1771.99163.8753

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-03-29c10ck3rManual testing1000010000--0.0530.091%
2019-03-09Skind_DKSkind-PC6850001215875022582.9096.4043.743%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-05-18Carsten Kossendeymother2642650.041
2010-09-30Carsten Kossendeymother2652660.082
2010-12-25Carsten KossendeyManual testing2662670.165
2011-08-17Carsten KossendeyManual testing2672680.329
2012-05-23Carsten KossendeyManual testing2682690.659
2014-04-08ITSMasterStation2692701.318
2014-11-22NoWhereManT10652702712.636
2016-05-12Carsten KossendeyManual testing2712725.271
2017-06-07Carsten KossendeyManual testing27227310.54
2018-10-27Strolling JellyfishManual testing273276147.6
2019-01-27TheJudgerManual testing276277168.7


ECM factoring results:
No ECM results for M90728369


Lucas-Lehmer results:
No L-L results for M90728369


PRP results:
No PRP results for M90728369


CERT results:
No CERT results for M90728369


P-1 factor-bounds graph:
B1 = 685000, B2 = 12158750 (P-1 stage 2)
B1 = 685000 (P-1 stage 1)
B1 = 10000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
277
276
273
272
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00