is 2 15794419 - 1
has 4754594 decimal digits
takes 8.636 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L4C10450459169805double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2671.881364.1791 %48000026440260011.78149.8590 %13.662767.7107 %
Target2697.558865.2174 %110000140000000.68723.1192 %8.246066.3023 %
Difference-2-5.6775-1.0383 %+370000+250402600+11.0942+6.7398%+5.4167+1.4084 %

Known prime factors (1 factor, 78.1 bits, 0.00049417% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
157944193132779266796693415144732478.0529917361527501244
22 × 3 × 19 × 1907 × 137771 × 165559
2016-01-061377711655596,563.80.11040.2223

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2002-06-23PhillTv4_computers235000235000--0.1861.561%
2016-01-06ThaManual testing30000030000012478.0520.2481.747%
2023-08-11nordisweet16_30.8b14480000480000
skipped known factor: 313277926679669341514473
--0.3962.142%
2023-08-29nordisweet16_30.8b14480000264402600
skipped known factor: 313277926679669341514473
--13.118.321%


Trial Factoring results:
57585960616263646566676869
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-02-04Net_Forcev4_computers212580.002
2001-07-03WorknPlayv4_computers212650.237
2022-03-27LordJuliusManual testing265266
2014-07-10NesowaManual testing2662670.946


ECM factoring results:
No ECM results for M15794419


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2002-10-12PhillTv4_computers4C104504591698058.636
2007-02-20ANONYMOUSv4_computers4C104504591698058.636


PRP results:
dateuseridcompidcofactorsres64
2023-10-21Naegi Makoto12500H
313277926679669341514473
4472093461558F52


CERT results:
dateuseridcompid
2023-10-21Will EdgingtonHuamea


P-1 factor-bounds graph:
B1 = 480000, B2 = 264402600 (P-1 stage 2)
B1 = 480000 (P-1 stage 1)
B1 = 300000 (P-1 stage 1)
B1 = 235000 (P-1 stage 1)
104
105
106
104
105
106
107
108
109
TF factor-bounds graph:
267
266
265
258
this exponent TF target: 69
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00