is 2 24744131 - 1
has 7448726 decimal digits
takes 20.070 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LCF033E8D85CFDFC6double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275309.241466.6667%29000074675000.80102.5152%310.042367.5051%0.8384%
PrimeNet2660.596862.1212%11000040000000.37864.9707%0.975564.0040%1.8828%
GPU722709.656964.2857%17000050000000.50943.6224%10.166365.5794%1.2937%
Difference+5+299.5845+2.3810%+120000+2467500+0.2916-1.1072%+299.8760+1.9256%+1.9256%

Known prime factors:
No known factors for M24744131

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-06-12T00:00:00ANONYMOUSv4_computers2900007467500---0.801--2.515%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-09-16T00:00:00Net_Forcev4_computers21256--0.000--
2001-09-10T00:00:00Jocelyn Larouchev4_computers21256--0.000--
2001-12-22T00:00:00Mattv4_computers21258--0.002--
2003-08-25T00:00:00Net_Forcev4_computers21260--0.006--
2004-02-23T00:00:00ANONYMOUSv4_computers21267--1.201--
2011-08-22T21:08:00Carsten KossendeyManual testing267268--1.208--
2011-09-06T05:34:00Carsten KossendeyManual testing268269--2.416--
2011-09-06T05:34:00Carsten KossendeyManual testing269270--4.832--
2011-09-06T13:13:00Carsten KossendeyManual testing270271--9.66--
2021-08-30T16:04:32TheJudgerManual testing271272--19.33--
2021-08-30T16:04:32TheJudgerManual testing272273--38.66--
2021-10-01T20:00:53TheJudgerManual testing273274--77.31--
2021-10-19T16:40:24TheJudgerManual testing274275--154.6--


ECM factoring results:
No ECM results for M24744131


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-07-02T00:00:00ANONYMOUSv4_computersCF033E8D85CFDFC620.07
2012-02-28T11:11:00Carsten KossendeymotherCF033E8D85CFDFC620.07


PRP results:
No PRP results for M24744131


P-1 factor-bounds graph:
B1 = 290000, B2 = 7467500 (P-1 stage 2)
B1 = 290000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2021-10-19T16:40:24+00:00