is 2 3829901 - 1
has 1152916 decimal digits
takes 0.402 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L29E2FB029FDB2245double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual27062.390868.5714 %100000001023710688086.379213.5207 %148.770072.8208 %
Target2640.929465.6250 %2400025000000.02422.2263 %0.953666.3903 %
Difference+6+61.4615+2.9464 %+9976000+10234606880+86.3550+11.2944%+147.8165+6.4305 %

Known prime factors:
No known factors for M3829901

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2009-07-27Carsten Kossendeymother20000270000--0.0051.797%
2011-10-31Squeeky_SquirrelT7500_22007000011375006--0.0203.398%
2014-10-14JossManual testing8675986759--0.0131.439%
2016-02-16JossManual testing21954221954206--0.0504.610%
2016-08-06JossManual testing43908421954206--0.0814.892%
2016-08-10JossManual testing43908443908406--0.1005.731%
2021-01-21axnManual testing15000000750000000--8.38315.415%
2023-12-12JossJoss23266162514892380--25.1815.829%
2024-03-08JossJoss100000005029784760--51.2718.303%
2024-03-09JossJoss1000000010237106880--102.619.430%


Trial Factoring results:
5758596061626364656667686970
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2009-02-28S485122USB-A2602610.040
2011-03-11markrut2612620.080
2012-02-20GrunwalderGIMPManual testing212630.417
2016-02-23Mark RoseManual testing212630.296
2015-01-18VictordeHollanderManual testing2632651.488
2016-02-28ramgeisManual testing2652661.951
2016-11-19Gordon SpenceManual testing2662673.902
2018-09-24TJAOIManual testing2672687.805
2020-08-24TJAOIManual testing26826915.61
2022-05-11DRobinsonPEManual testing26927031.22


ECM factoring results:
Total ECM effort:8.486 GHz-days
Estimated T-Level:21.001
DigitsB1CompleteFacMiss
20110002.16011.530%
25500000.20081.850%
302500000.01398.742%


ECM Summary

B1B2factorcurvesGHz-days
500005000000416.004
50000690000071.236
50000700000071.246


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-08-31ANONYMOUSv4_computers29E2FB029FDB22450.402


PRP results:
No PRP results for M3829901


CERT results:
No CERT results for M3829901


P-1 factor-bounds graph:
B1 = 10000000, B2 = 10237106880 (P-1 stage 2)
B1 = 10000000, B2 = 5029784760 (P-1 stage 2)
B1 = 2326616, B2 = 2514892380 (P-1 stage 2)
B1 = 15000000, B2 = 750000000 (P-1 stage 2)
B1 = 15000000 (P-1 stage 1)
B1 = 10000000 (P-1 stage 1)
B1 = 2326616 (P-1 stage 1)
B1 = 439084, B2 = 4390840 (P-1 stage 2)
B1 = 439084, B2 = 2195420 (P-1 stage 2)
B1 = 439084 (P-1 stage 1)
B1 = 219542, B2 = 2195420 (P-1 stage 2)
B1 = 219542 (P-1 stage 1)
B1 = 70000, B2 = 1137500 (P-1 stage 2)
B1 = 86759 (P-1 stage 1)
B1 = 70000 (P-1 stage 1)
B1 = 20000, B2 = 270000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
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1010
1011
TF factor-bounds graph:
270
269
268
267
266
265
263
262
261
this exponent TF target: 64
TF double-checked to: 67
ECM T-Level=21 ~= 53-bit
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Last modified: 2024-03-13T02:15:48+00:00