is 2 100395857 - 1
has 30222165 decimal digits
takes 382.899 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-
PRP22F2346B09E53735PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual276152.436564.4737 %840000172200009.58063.7836 %162.017165.8179 %
Target276152.436564.4737 %65000011000000036.54143.8423 %188.978065.8387 %
Difference---+190000-92780000-26.9609-0.0587 %-26.9609-0.0209 %

Known prime factors:
No known factors for M100395857

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-10-13Ben Deloi-0005cc1e3d62243d78400001722000012--9.583.784%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-01-031997rj7Manual testing2632640.020
2010-08-12Richard2642650.037
2011-02-12Craig MeyersManual testing2652660.074
2011-03-15Craig MeyersManual testing2662670.149
2013-08-21David CampeauManual testing2672680.298
2014-03-22SMoffatManual testing2682690.595
2014-03-24Preben SManual testing2692701.191
2014-03-25ANONYMOUS2702712.382
2014-11-25shaugeManual testing2712724.764
2020-02-28el groccoManual testing2722739.53
2020-03-08gcardonaManual testing27327419.05
2020-08-12penluManual testing274276114.3


ECM factoring results:
No ECM results for M100395857


Lucas-Lehmer results:
No L-L results for M100395857


PRP results:
dateuseridcompidcofactorsres64
2020-10-14Ben Deloi-0005cc1e3d62243d722F2346B09E53735


CERT results:
dateuseridcompid
2020-10-14curtiscjckl2f11403l


P-1 factor-bounds graph:
B1 = 840000, B2 = 17220000 (P-1 stage 2)
B1 = 840000 (P-1 stage 1)
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108
TF factor-bounds graph:
276
274
273
272
271
270
269
268
267
266
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264
this exponent TF target: 76
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00