is 2 24427393 - 1
has 7353379 decimal digits
takes 19.813 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L7F86BEC2F78FC0C2double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275313.251166.6667%26500033787500.51122.0543%313.762367.3514%0.6848%
PrimeNet2660.604662.1212%11000040000000.37864.9621%0.983264.0008%1.8796%
GPU722709.782164.2857%17000050000000.50943.6160%10.291565.5772%1.2914%
Difference+5+303.4691+2.3810%+95000-1621250+0.0018-1.5617%+303.4708+1.7743%+1.7743%

Known prime factors:
No known factors for M24427393

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-07-13T00:00:00ANONYMOUSv4_computers2650003378750---0.511--2.054%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-09-16T00:00:00Net_Forcev4_computers21256--0.000--
2001-12-01T00:00:00Mattv4_computers21258--0.002--
2003-08-08T00:00:00Net_Forcev4_computers21260--0.006--
2004-01-18T00:00:00Will Edgingtonv4_computers21267--1.216--
2016-05-24T15:08:13VictordeHollanderManual testing267268--1.224--
2018-02-12T00:46:20VictordeHollanderManual testing268269--2.447--
2018-09-18T10:53:30ramgeisManual testing269270--4.895--
2021-08-05T15:33:44SRBaseManual testing270271--9.79--
2021-08-30T16:08:43TheJudgerManual testing271272--19.58--
2021-08-30T16:08:43TheJudgerManual testing272273--39.16--
2021-10-01T20:10:08TheJudgerManual testing273274--78.31--
2021-10-22T16:42:40TheJudgerManual testing274275--156.6--


ECM factoring results:
No ECM results for M24427393


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-08-06T00:00:00ANONYMOUSv4_computers7F86BEC2F78FC0C219.81
2010-08-12T13:42:00Dingeldeinotto27F86BEC2F78FC0C219.81


PRP results:
No PRP results for M24427393


P-1 factor-bounds graph:
B1 = 265000, B2 = 3378750 (P-1 stage 2)
B1 = 265000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-10-22T16:42:40+00:00