is 2 99947741 - 1
has 30087269 decimal digits
takes 381.190 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
Actual277306.241764.9351 %8400008400004.64531.4231 %310.887065.4341 %
Target276153.120064.4737 %65000011000000036.54143.8402 %189.661465.8380 %
Difference+1+153.1217+0.4614 %+190000-109160000-31.8961-2.4171 %+121.2256-0.4039 %

Known prime factors (1 factor, 97.3 bits, 0.00009737% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
999477411975819722257563626681654670393097.318988426402882664264859
3 × 47 × 151 × 134917 × 542401 × 634397
2019-11-24542401634397382,215,6643.02736.1046

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-11-24penluManual testing840000840000613097.3184.9951.595%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-10-091997rj7compw2642650.037
2012-05-08Jimmy BrüggemanniMac22652660.075
2013-08-18RobishManual testing2662670.150
2013-09-12processinfoManual testing2672680.299
2013-09-30Yury VorobyovManual testing2682690.598
2013-12-10CSLatDDikenny-242692701.196
2014-05-26tartar22702712.393
2017-01-27monstManual testing2712724.785
2019-01-04Gordon BowerManual testing27227566.99
2019-10-17Daniil TsarkovManual testing27527676.56
2019-11-15TheJudgerManual testing276277153.1


ECM factoring results:
No ECM results for M99947741


Lucas-Lehmer results:
No L-L results for M99947741


PRP results:
No PRP results for M99947741


CERT results:
No CERT results for M99947741


P-1 factor-bounds graph:
B1 = 840000 (P-1 stage 1)
104
105
106
104
105
106
TF factor-bounds graph:
277
276
275
272
271
270
269
268
267
266
265
this exponent TF target: 76
TF double-checked to: 67
250
260
270
280
290
2100
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Last modified: 2024-03-13T02:15:48+00:00