is 2 93238357 - 1
has 28067543 decimal digits
takes 337.730 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
Actual277328.278764.9351 %7200007200003.78161.3146 %332.060365.3960 %
Target27582.068264.0000 %60000011000000034.45684.1478 %116.525065.4932 %
Difference+2+246.2104+0.9351 %+120000-109280000-30.6752-2.8332 %+215.5353-0.0972 %

Known prime factors (1 factor, 87.0 bits, 0.00009326% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
932383571497757173468816008743186092786.953803187240562816872
23 × 3 × 7 × 19 × 21067 × 56531 × 211283
2019-08-2456531211283299,4870.34120.6043

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-08-24Ryan PropperManual testing72000072000012786.9533.7821.657%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2011-01-11Architects Cubedm1_592642650.040
2013-07-20David CampeauManual testing2652660.080
2014-03-08trifdale2662670.160
2014-03-25Carsten KossendeyManual testing2672680.321
2014-03-31lhuntwalky2682690.641
2014-09-18Houd Al-Obaidlihpi72692701.282
2014-11-29RichD0Manual testing2702712.565
2017-09-10masserManual testing2712725.129
2019-02-23DerekManual testing27227310.26
2019-05-03DerekManual testing27327420.52
2019-08-18TheJudgerManual testing274277287.2


ECM factoring results:
No ECM results for M93238357


Lucas-Lehmer results:
No L-L results for M93238357


PRP results:
No PRP results for M93238357


CERT results:
No CERT results for M93238357


P-1 factor-bounds graph:
B1 = 720000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
277
274
273
272
271
270
269
268
267
266
265
this exponent TF target: 75
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00