is 2 91447693 - 1
has 27528499 decimal digits
takes 331.244 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
Actual277334.706864.9351 %745000178800008.81623.3716 %343.523066.1173 %
Target27583.675264.0000 %60000011000000034.45684.1381 %118.132065.4897 %
Difference+2+251.0316+0.9351 %+145000-92120000-25.6406-0.7665 %+225.3910+0.6276 %

Known prime factors (1 factor, 78.3 bits, 0.00008563% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
914476933741265619895426125209692478.3082045576819469588
22 × 3 × 31 × 53 × 59 × 659 × 2668453
2019-06-0865926684531,163.20.76691.4262

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-06-08penluManual testing745000178800001222478.3088.8164.088%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-01-03Architects Cubedm1_132642650.041
2013-06-15David CampeauManual testing2652660.082
2014-04-03GrunwalderGIMPGWPrime022662670.163
2014-04-06GrunwalderGIMPGWPrime022672680.327
2014-11-13tmorrowpaperclip2682690.654
2014-11-21tmorrowpaperclip2692701.307
2015-03-01monstManual testing2702712.615
2017-03-24monstManual testing2712725.230
2018-05-21RichD0Manual testing27227310.46
2018-05-24gcardonaManual testing27327420.92
2018-12-18penluManual testing27427541.84
2018-12-21Strolling JellyfishManual testing27527683.68
2019-03-10TheJudgerManual testing276277167.4


ECM factoring results:
No ECM results for M91447693


Lucas-Lehmer results:
No L-L results for M91447693


PRP results:
No PRP results for M91447693


CERT results:
No CERT results for M91447693


P-1 factor-bounds graph:
B1 = 745000, B2 = 17880000 (P-1 stage 2)
B1 = 745000 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 75
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00