is 2 1380053 - 1
has 415438 decimal digits
takes 0.053 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L0FDCEEC303A78547double-checked
PRP1358B39F797B75__PRP-tested

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26843.190369.1176 %22800000117050109330354.247518.3082 %397.437874.7716 %
Target2600.111365.0000 %55003250000.00131.1708 %0.112665.4098 %
Difference+8+43.0790+4.1176 %+22794500+117049784330+354.2462+17.1373%+397.3252+9.3618 %

Known prime factors:
No known factors for M1380053

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2003-02-09ANONYMOUSv4_computers204820480012--0.0011.019%
2003-02-16ANONYMOUSv4_computers409640960012--0.0011.733%
2003-09-21Xyzzyv4_computers15000206250--0.0012.266%
2003-09-21Team Prime Ribv4_computers15000206250--0.0012.266%
2014-05-12JossManual testing177580177580--0.0122.853%
2014-09-16mikrMSI310690011184900012--0.50013.934%
2018-09-28JossManual testing138005313800530012---13.717%
2018-10-13JossManual testing138005315180583012---13.874%
2022-12-20JossManual testing13800531596762090--5.71917.651%
2023-02-28JossManual testing13800534739828730--16.8119.337%
2023-05-22JossManual testing138005311026057770--38.9920.619%
2023-09-27Sid & AndyHockey_Puck22800000117050109330--414.427.800%


Trial Factoring results:
575859606162636465666768
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2001-11-03ANONYMOUSv4_computers212570.014
2003-02-24ANONYMOUSv4_computers212580.028
2003-03-27ANONYMOUSv4_computers212590.028
2016-02-23Mark RoseManual testing2592600.056
2009-02-15Sturle Sundevancraft.ifi2602610.111
2012-07-28Grant McCrackenthumper2612620.223
2013-01-23dbaughManual testing2622630.711
2015-04-17snme2pm1Manual testing2632654.130
2015-09-23ramgeisManual testing2652665.415
2018-04-23TJAOIManual testing26626710.83
2018-07-18ramgeisManual testing26726821.66


ECM factoring results:
Total ECM effort:29.062 GHz-days
Estimated T-Level:25.707
DigitsB1CompleteFacMiss
201100014.7690.000%
25500001.66118.986%
302500000.14186.808%
3510000000.01099.018%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025413.25
250000350000005015.82


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-11-13MadPooManual testing0FDCEEC303A785470.062


PRP results:
dateuseridcompidcofactorsres64
2020-11-06Ethan O'ConnorHighland20201358B39F797B7555


CERT results:
dateuseridcompid
2020-11-08GANPG-HP


P-1 factor-bounds graph:
B1 = 22800000, B2 = 117050109330 (P-1 stage 2)
B1 = 1380053, B2 = 11026057770 (P-1 stage 2)
B1 = 1380053, B2 = 4739828730 (P-1 stage 2)
B1 = 1380053, B2 = 1596762090 (P-1 stage 2)
B1 = 22800000 (P-1 stage 1)
B1 = 1380053, B2 = 151805830 (P-1 stage 2)
B1 = 3106900, B2 = 111849000 (P-1 stage 2)
B1 = 1380053, B2 = 138005300 (P-1 stage 2)
B1 = 3106900 (P-1 stage 1)
B1 = 1380053 (P-1 stage 1)
B1 = 177580 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 15000, B2 = 206250 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 4096 (P-1 stage 1)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 60
TF double-checked to: 67
ECM T-Level=25.71 ~= 69-bit
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Last modified: 2024-03-13T02:15:48+00:00