is 2 72685433 - 1
has 21880496 decimal digits
takes 194.333 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L0A51049AAF9A1C__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275105.274364.0000%615000104550004.46263.4829%109.736965.2538%1.2538%
PrimeNet2703.287561.4286%320000140000004.13005.5364%7.417463.5640%2.1355%
GPU7227452.635963.5135%500000170000005.42344.1223%58.059465.0176%1.5041%
Difference+1+52.6384+0.4865%+115000-6545000-0.9609-0.6395%+51.6775+0.2362%+0.2362%

Known prime factors:
No known factors for M72685433

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-09-11T20:12:00tscxw6600-3161500010455000---4.463--3.483%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-06-02T00:00:00Jocelyn Larouchev4_computers21257--0.000--
2008-09-19T11:27:00Wojciech FlorekManual testing21264--0.049--
2010-06-07T20:16:00Kevin JagetLaptop264265--0.051--
2010-08-31T23:46:00Kevin JagetLaptop265266--0.103--
2010-09-06T07:11:00wurkfurCobb_ID_Scanner266267--0.206--
2010-09-13T08:45:00stefan_2106maikes_machine267268--0.411--
2010-09-18T03:15:00Kevin JagetManual testing268269--0.822--
2013-05-11T02:41:00ANONYMOUS269270--1.645--
2013-07-04T02:28:00SMoffatManual testing270271--3.290--
2015-03-11T15:29:00srow7Manual testing271272--6.580--
2015-08-24T08:41:00FredrikManual testing272273--13.16--
2015-09-04T13:48:00Guido LorenziniManual testing273274--26.32--
2015-09-04T13:48:00Guido LorenziniManual testing274275--52.64--


ECM factoring results:
No ECM results for M72685433


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2015-10-15T09:02:56curtiscsc133a-01f0A51049AAF9A1C__194.3


PRP results:
No PRP results for M72685433


P-1 factor-bounds graph:
B1 = 615000, B2 = 10455000 (P-1 stage 2)
B1 = 615000 (P-1 stage 1)
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108
TF factor-bounds graph:
275
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Last modified: 2015-10-15T09:02:56+00:00