is 2 99857071 - 1
has 30059974 decimal digits
takes 380.844 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
Actual278613.041365.3846 %725000134125007.83212.8998 %620.873366.3884 %
Target276153.259064.4737 %65000011000000036.54143.8397 %189.800465.8378 %
Difference+2+459.7823+0.9109 %+75000-96587500-28.7094-0.9400 %+431.0729+0.5506 %

Known prime factors (1 factor, 82.4 bits, 0.00008252% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
9985707163714835503931300482544812582.39831903016414296440
23 × 3 × 5 × 7 × 769 × 57649 × 856711
2020-08-05576498567119,808.70.55960.6488

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-08-05MarkSdesktop-i772500013412500622582.3987.8323.531%


Trial Factoring results:
57585960616263646566676869707172737475767778
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-10-081997rj7compa2642650.037
2012-06-26Jimmy BrüggemanniMac22652660.075
2013-08-16Le ComteManual testing2662670.150
2013-08-24processinfoManual testing2672680.299
2013-08-27processinfoManual testing2682690.599
2013-09-09ANONYMOUS2692701.197
2013-09-12CSLatDDtmsm8-322702712.395
2013-12-23ITSTV2712724.789
2019-03-19Niels_Mache_NextcloudManual testing2722739.58
2019-12-22bayanneManual testing27327419.16
2020-02-11ChuckManual testing27427538.32
2020-02-14TheJudgerManual testing27527676.63
2020-02-14TheJudgerManual testing276277153.3
2020-04-13SRBaseManual testing277278306.5


ECM factoring results:
No ECM results for M99857071


Lucas-Lehmer results:
No L-L results for M99857071


PRP results:
No PRP results for M99857071


CERT results:
No CERT results for M99857071


P-1 factor-bounds graph:
B1 = 725000, B2 = 13412500 (P-1 stage 2)
B1 = 725000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
278
277
276
275
274
273
272
271
270
269
268
267
266
265
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
JSON version of this page
Last modified: 2024-03-03T02:29:32+00:00