is 2 2514151 - 1
has 756835 decimal digits
takes 0.174 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
Actual26711.818767.1642 %2000000600000000.51907.6516 %12.337669.6766 %
Target2630.634865.0794 %110008500000.00571.4091 %0.640565.5714 %
Difference+4+11.1839+2.0848 %+1989000+59150000+0.5133+6.2425%+11.6971+4.1052 %

Known prime factors (2 factors, 106.4 bits, 0.00423101% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
25141511144894082391236.73622769
22769
-1227697.022e-90.00010.0002
25141519182594449270127860492169.637182618196943424
26 × 11 × 769 × 11071 × 30469
2018-11-22110713046954.7330.00120.0023

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2018-11-22alpertronlaptop22000000600000001222169.6370.51910.570%


Trial Factoring results:
5758596061626364656667
No TF results for M2514151


ECM factoring results:
Total ECM effort:5.651 GHz-days
Estimated T-Level:21.022
DigitsB1CompleteFacMiss
20110002.19911.095%
25500000.20481.508%
302500000.01398.709%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.276
500006992841505.375


Lucas-Lehmer results:
No L-L results for M2514151


PRP results:
dateuseridcompidcofactorsres64
2017-10-14Oliver KruseGTX-1
114489408239
8C41DBCB486596F3
2017-11-30kkmrkkblmbrbkc4.xlarge
114489408239
8C41DBCB486596F3
2018-11-22rucio
114489408239
918259444927012786049
8C41DBCB486596F3


CERT results:
No CERT results for M2514151


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=21.02 ~= 53-bit
250
260
270
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Last modified: 2024-03-13T02:15:48+00:00