is 2 2394823 - 1
has 720914 decimal digits
takes 0.162 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-LCEC79EDA7FA34430double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26712.407667.1642 %2000000600000000.50557.6136 %12.913069.6642 %
Target2630.666465.0794 %100007000000.00471.2743 %0.671165.5243 %
Difference+4+11.7411+2.0848 %+1990000+59300000+0.5008+6.3393%+12.2419+4.1398 %

Known prime factors (2 factors, 146.6 bits, 0.00612174% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
239482312347993679290992213212270.065257805977295420
22 × 33 × 5 × 2441 × 195583153
2009-02-022441195583153174.991.04401.9495
23948231098728707241401636914732476.54022939664168111832
23 × 32 × 23 × 47 × 294733068251
2023-07-13472947330682516,905.01,573.02,937.8

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-09-21ANONYMOUSv4_computers2048204800--0.0010.654%
2018-09-28alpertronManual testing20000006000000012---10.522%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-03-15ANONYMOUSv4_computers212590.016
2022-03-09LordJuliusManual testing21260
2009-01-15Sturle Sundefungo.ifi2602610.064


ECM factoring results:
Total ECM effort:7.021 GHz-days
Estimated T-Level:21.261
DigitsB1CompleteFacMiss
20110002.6936.767%
25500000.25277.703%
302500000.01698.404%


ECM Summary

B1B2factorcurvesGHz-days
10.198
50000688964270.721
500007000000505.194
500001000890070.908


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-02ANONYMOUSv4_computersCEC79EDA7FA344300.162
1999-04-13ANONYMOUSv4_computersCEC79EDA7FA344300.162


PRP results:
dateuseridcompidcofactorsres64
2017-10-12Oliver KruseGTX-2
1234799367929099221321
2E4AA81434808928
2017-11-26kkmrkkblmbrbkc4.xlarge
1234799367929099221321
2E4AA81434808928
2023-07-13Nesowa6700T
1234799367929099221321
109872870724140163691473
2E4AA81434808928


CERT results:
dateuseridcompid
2023-07-14LOBESYOGA740


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
261
260
259
this exponent TF target: 63
TF double-checked to: 67
ECM T-Level=21.26 ~= 54-bit
250
260
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Last modified: 2024-03-13T02:15:48+00:00