is 2 188700041 - 1
has 56804373 decimal digits
takes 1,467.667 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
Actual278324.411764.1026 %2400000240000027.06672.1298 %351.478464.8671 %
Target278324.411764.1026 %1200000225000000151.04604.2329 %475.457765.6221 %
Difference---+1200000-222600000-123.9793-2.1031 %-123.9793-0.7550 %

Known prime factors (1 factor, 82.0 bits, 0.00004346% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
18870004148900260552126648722745212582.01612957140945222860
22 × 5 × 523 × 919979 × 1346479
2020-02-2791997913464795,190.610.63721.116

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-02-27snme2pm1g102400000240000012582.01627.072.130%


Trial Factoring results:
57585960616263646566676869707172737475767778
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-08-01Torchwood InstituteATH2-630-temp2632640.010
2011-04-08Richardsvn_022642650.020
2013-05-30Broomfield Designers.comskeletor2652660.040
2015-08-23Michael.ReillyFreelancer2662670.079
2016-07-29sasakiold-home2672680.158
2017-07-25ConductorManual testing2682690.317
2018-11-07Chabot PrimeCC3906-212692700.634
2019-01-12RuzovejManual testing2702711.267
2019-01-18RuzovejManual testing2712722.534
2019-01-19lobsterfordinnerManual testing2722735.069
2019-01-26RichardManual testing27327410.14
2020-02-18snme2pm1Manual testing27427520.28
2020-02-18snme2pm1Manual testing27527640.55
2020-02-18snme2pm1Manual testing27627781.10
2020-02-18snme2pm1Manual testing277278162.2


ECM factoring results:
No ECM results for M188700041


Lucas-Lehmer results:
No L-L results for M188700041


PRP results:
No PRP results for M188700041


CERT results:
No CERT results for M188700041


P-1 factor-bounds graph:
B1 = 2400000 (P-1 stage 1)
104
105
106
107
104
105
106
107
TF factor-bounds graph:
278
277
276
275
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 78
TF double-checked to: 67
250
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Last modified: 2024-03-13T02:15:48+00:00