is 2 1475363 - 1
has 444129 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-L18C5EE9489937503double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26720.140168.6567 %500000150000000.07144.9385 %20.211570.2046 %
Target2600.104165.0000 %65005000000.00181.4482 %0.106065.5069 %
Difference+7+20.0360+3.6567 %+493500+14500000+0.0696+3.4903%+20.1055+4.6977 %

Known prime factors (1 factor, 95.9 bits, 0.00649850% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1475363727299127320056678020368594172995.87724648141756301895805316
22 × 7 × 89 × 157 × 313 × 983 × 64871 × 3156371
2010-11-106487131563715.439e+90.01290.0178

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-29Team Prime Ribv4_computers20000270000--0.0022.642%
2010-11-05Rob_Deetwopc100000200000--0.0072.985%
2010-11-06Rob_Deetwopc200000300000--0.0133.541%
2010-11-07Rob_Deetwopc20000010000006--0.0165.088%
2010-11-08Rob_Deetwopc20000020000006--0.0195.993%
2010-11-09Rob_Deetwopc20000030000006--0.0236.528%
2010-11-10Rob_Deetwopc2995.8770.0260.000%
2016-03-17alpertronManual testing5000001500000012
skipped known factor: 72729912732005667802036859417
---9.460%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-05-20Jossv4_computers212570.013
2003-07-30ANONYMOUSv4_computers212580.026
2022-03-09LordJuliusManual testing21260
2022-03-08LordJuliusManual testing258260
2010-05-06Architects Cubedm1_tt2602610.104


ECM factoring results:
Total ECM effort:29.848 GHz-days
Estimated T-Level:25.704
DigitsB1CompleteFacMiss
201100014.6540.000%
25500001.65119.189%
302500000.14186.866%
3510000000.01099.021%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025113.83
250000350000005016.02


Lucas-Lehmer results:
No L-L results for M1475363


PRP results:
dateuseridcompidcofactorsres64
2017-10-01Oliver KruseGTX-3
72729912732005667802036859417
325CD328CE61889B
2017-10-28kkmrkkblmbrbkc4.xlarge
72729912732005667802036859417
325CD328CE61889B


CERT results:
No CERT results for M1475363


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 200000, B2 = 3000000 (P-1 stage 2)
B1 = 200000, B2 = 2000000 (P-1 stage 2)
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 = 20000, B2 = 270000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
TF factor-bounds graph:
261
260
258
257
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.7 ~= 69-bit
250
260
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2100
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Last modified: 2024-02-09T03:30:02+00:00