is 2 246769 - 1
has 74285 decimal digits
takes 0.001 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L291BAD78C20D4C28double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual267120.411973.1343 %12100000049827950772602,209.693224.1853 %2,330.105079.6319 %
Target2440.000059.0909 %45005500000.000310.1399 %0.000363.2390 %
Difference+23+120.4119+14.0434 %+120995500+4982794527260+2,209.6929+14.0454%+2,330.1047+16.3928 %

Known prime factors:
No known factors for M246769

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2000-11-25ANONYMOUSv4_computers1000004000000--0.00322.482%
2001-06-09ANONYMOUSv4_computers10000010000000--0.00524.896%
2002-06-02ANONYMOUSv4_computers32768327680012--0.00220.701%
2002-08-03ANONYMOUSv4_computers65536655360012--0.00323.321%
2003-03-07ANONYMOUSv4_computers1310721310720030--0.00725.895%
2003-11-08ANONYMOUSv4_computers2621442621440012--0.01428.417%
2011-02-07JossManual testing20000002000000--0.01620.482%
2011-07-24JossManual testing20388532038853--0.01720.540%
2012-02-26JossManual testing25485662548566--0.02121.209%
2013-10-21David Campeaui5-2500k26550009027000012--0.06033.259%
2016-01-07JossManual testing3249720032497200012--0.39437.015%
2016-06-27JossManual testing3249720064994400012--0.53839.297%
2019-04-18alexhome100000000200000000012--1.65642.420%
2022-06-15Sid & AndyMagic_8_Ball1210000004982795077260--2,74662.921%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2023-02-05masserManual testing3000000096000000011923--0.775
2023-02-05masserManual testing3000000099000000027--0.788
2023-02-11masserManual testing3000000099000000065--0.788


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-11-24ANONYMOUSv4_computers2522530.002
2000-04-27ANONYMOUSv4_computers212540.010
2022-03-07LordJuliusManual testing254255
2001-02-18ANONYMOUSv4_computers212560.039
2002-04-14ANONYMOUSv4_computers212570.078
2016-02-23Mark RoseManual testing2572580.078
2008-12-31Sturle Sundegimo.ifi2582590.156
2009-01-07Sturle Sundetristan.ifi2592600.311
2013-07-22lycornasteroid2602610.622
2015-08-07snme2pm1Manual testing2612621.245
2016-01-23Gordon SpenceManual testing26226411.93
2018-03-11Gordon SpenceManual testing26426515.14
2019-12-31Gordon SpenceManual testing26526630.28


ECM factoring results:
Total ECM effort:715.924 GHz-days
Estimated T-Level:31.703
DigitsB1CompleteFacMiss
2011000114.3320.000%
255000019.9680.000%
302500002.8955.531%
3510000000.34171.130%
4030000000.03496.670%
45110000000.00399.711%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002971.583
2500002500000058217.28
110000011486399424150697.1


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2016-06-01MadPooManual testing291BAD78C20D4C280.001


PRP results:
No PRP results for M246769


CERT results:
No CERT results for M246769


P-1 factor-bounds graph:
B1 = 121000000, B2 = 4982795077260 (P-1 stage 2)
B1 = 100000000, B2 = 2000000000 (P-1 stage 2)
B1 = 121000000 (P-1 stage 1)
B1 = 100000000 (P-1 stage 1)
B1 = 32497200, B2 = 649944000 (P-1 stage 2)
B1 = 32497200, B2 = 324972000 (P-1 stage 2)
B1 = 32497200 (P-1 stage 1)
B1 = 2655000, B2 = 90270000 (P-1 stage 2)
B1 = 2655000 (P-1 stage 1)
B1 = 2548566 (P-1 stage 1)
B1 = 2038853 (P-1 stage 1)
B1 = 2000000 (P-1 stage 1)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 100000, B2 = 4000000 (P-1 stage 2)
B1 = 262144 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
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TF factor-bounds graph:
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this exponent TF target: 44
TF double-checked to: 67
ECM T-Level=31.7 ~= 89-bit
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Last modified: 2024-03-13T02:15:48+00:00