is 2 74130187 - 1
has 22315410 decimal digits
takes 204.948 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
Actual27451.610163.5135 %685000142137505.70094.1505 %57.311065.0279 %
Target27451.610163.5135 %5000008500000020.46024.1323 %72.070265.0213 %
Difference---+185000-70786250-14.7593+0.0182%-14.7593+0.0066 %

Known prime factors (1 factor, 101.4 bits, 0.00013676% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
74130187330306096509239982663838064860131101.38222278784789065754188900
22 × 34 × 52 × 31 × 127 × 797 × 108421 × 8084801
2015-05-3110842180848011.957e+92.17683.2980

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2015-05-31TheJudgerManual testing6850001421375012231101.3825.8144.150%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-09-12lycornManual testing212640.025
2010-06-21ANONYMOUS2642650.050
2010-08-26ANONYMOUS2652660.101
2011-01-10oilwarzonedotcomb2bwebserver2662670.202
2011-01-13oilwarzonedotcomb2bwebserver2672680.403
2011-01-18oilwarzonedotcomb2bwebserver2682690.806
2012-10-23Clown_RoyalManual testing2692701.613
2013-05-13Ilhomzoom-zoom2702713.226
2015-05-22RichD0Manual testing2712726.452
2015-05-23BdotManual testing27227312.90
2015-05-27gcardonaManual testing27327425.81


ECM factoring results:
No ECM results for M74130187


Lucas-Lehmer results:
No L-L results for M74130187


PRP results:
No PRP results for M74130187


CERT results:
No CERT results for M74130187


P-1 factor-bounds graph:
B1 = 685000, B2 = 14213750 (P-1 stage 2)
B1 = 685000 (P-1 stage 1)
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108
TF factor-bounds graph:
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264
this exponent TF target: 74
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00