is 2 1120883 - 1
has 337420 decimal digits
takes 0.033 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
Actual26726.509468.6567 %300000100000000.03564.1248 %26.545069.9496 %
Target2600.137065.0000 %45001100000.00040.6869 %0.137565.2404 %
Difference+7+26.3724+3.6567 %+295500+9890000+0.0352+3.4379%+26.4075+4.7092 %

Known prime factors (3 factors, 193.0 bits, 0.01721791% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
112088356044151825.74025
52
-25254.010e-121.074e-62.187e-6
11208837835798664288891549.477349536868
22 × 137 × 637841
2014-04-301376378418.904e-50.00150.0028
112088328442661937953093499744878123573675136117.776126876141122459228571335626125
32 × 53 × 83 × 227 × 241 × 379 × 1549 × 6761 × 52957 × 118163
2014-12-27529571181631.173e+110.00240.0046

4 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-12-27alpertronManual testing3000001000000012236117.7760.0368.214%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2014-04-30TJAOIManual testing??
49.477
15


ECM factoring results:
Total ECM effort:17.681 GHz-days
Estimated T-Level:25.658
DigitsB1CompleteFacMiss
201100014.8080.000%
25500001.62019.795%
302500000.13287.678%
3510000000.00999.129%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002819.92
25000025000000447.764


Lucas-Lehmer results:
No L-L results for M1120883


PRP results:
dateuseridcompidcofactorsres64
2017-09-29Oliver KruseGTX-3
56044151
783579866428889
284426619379530934997448781235736751
4EACA29A1D177938
2017-10-05Oliver KruseManual testing
56044151
783579866428889
284426619379530934997448781235736751
4EACA29A1D177938
2017-10-16Oliver KruseThreadripper-PC
56044151
783579866428889
284426619379530934997448781235736751
4EACA29A1D177938
2018-01-02ATHec2-1xh
56044151
783579866428889
284426619379530934997448781235736751
4EACA29A1D177938


CERT results:
No CERT results for M1120883


P-1 factor-bounds graph:
B1 = 300000, B2 = 10000000 (P-1 stage 2)
B1 = 300000 (P-1 stage 1)
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106
100
101
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103
104
105
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107
TF factor-bounds graph:
this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.66 ~= 69-bit
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2120
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Last modified: 2024-03-13T02:15:48+00:00