is 2 2693917 - 1
has 810950 decimal digits
takes 0.208 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
Actual26711.030067.1642 %2000000600000000.57797.7059 %11.607969.6945 %
Target2630.592565.0794 %1400011000000.00821.6606 %0.600665.6592 %
Difference+4+10.4376+2.0848 %+1986000+58900000+0.5697+6.0453%+11.0072+4.0352 %

Known prime factors (2 factors, 154.6 bits, 0.00573891% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2693917138909183816452571753.6252578200884
22 × 7 × 8419 × 10937
-8419109370.00050.00100.0019
2693917249434750169439461794974718116931100.977462959234025100739545752
23 × 32 × 7 × 17 × 43 × 158227 × 1182847 × 6714067
2019-06-21118284767140675.112e+100.16620.2696

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2019-06-21alpertronlaptop320000006000000012231100.9770.56310.638%


Trial Factoring results:
5758596061626364656667
No TF results for M2693917


ECM factoring results:
Total ECM effort:0.303 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.303


Lucas-Lehmer results:
No L-L results for M2693917


PRP results:
dateuseridcompidcofactorsres64
2017-10-19Oliver KruseGTX-0
13890918381645257
13FAF8D183C467E2
2017-12-04kkmrkkblmbrbkold
13890918381645257
13FAF8D183C467E2
2019-06-21Niels_Mache_NextcloudSuperDry-X
13890918381645257
2494347501694394617949747181169
13FAF8D183C467E2


CERT results:
No CERT results for M2693917


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
TF factor-bounds graph:
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=0.58 ~= -15-bit
250
260
270
280
290
2100
2110
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00