is 2 1459937 - 1
has 439485 decimal digits
takes 0.056 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L40EB6599A8FEC462double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26720.352968.6567 %500000150000000.07144.9322 %20.424370.2026 %
Target2600.105265.0000 %65004500000.00171.3985 %0.106965.4895 %
Difference+7+20.2477+3.6567 %+493500+14550000+0.0697+3.5337%+20.3174+4.7131 %

Known prime factors (1 factor, 67.6 bits, 0.00462758% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14599372175200004214250356792167.56074496365398447
1823 × 25981 × 1572869
2010-09-2725981157286920.3530.00610.0089

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-29Team Prime Ribv4_computers15000243750--0.0022.398%
2010-09-24Rob_Deetwopc100000200000--0.0072.980%
2010-09-25Rob_Deetwopc200000300000--0.0133.536%
2010-09-26Rob_Deetwopc20000010000006--0.0165.081%
2010-09-27Rob_Deetwopc2167.5600.0190.000%
2016-03-17alpertronManual testing5000001500000012
skipped known factor: 217520000421425035679
---9.450%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-07-21ANONYMOUSv4_computers212580.026
2022-03-09LordJuliusManual testing21260
2022-03-08LordJuliusManual testing258260
2010-05-10Architects Cubeda3_bu22602610.105


ECM factoring results:
Total ECM effort:30.840 GHz-days
Estimated T-Level:25.718
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.67418.740%
302500000.14486.623%
3510000000.01099.005%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025113.79
250000400000005017.05


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-02-14ANONYMOUSv4_computers40EB6599A8FEC4620.056


PRP results:
dateuseridcompidcofactorsres64
2017-10-01Oliver KruseGTX-3
217520000421425035679
E4F74CC4689365BC
2017-10-27kkmrkkblmbrbkc4.xlarge
217520000421425035679
E4F74CC4689365BC


CERT results:
No CERT results for M1459937


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 200000, B2 = 1000000 (P-1 stage 2)
B1 = 200000, B2 = 300000 (P-1 stage 2)
B1 = 200000 (P-1 stage 1)
B1 = 100000, B2 = 200000 (P-1 stage 2)
B1 = 100000 (P-1 stage 1)
B1 = 15000, B2 = 243750 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
261
260
258
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.72 ~= 69-bit
250
260
270
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Last modified: 2024-02-09T03:30:02+00:00