is 2 25473607 - 1
has 7668320 decimal digits
takes 21.829 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LDE18D172EF4ED9EDdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275300.385766.6667%29000060175000.74812.4073%301.133867.4691%0.8024%
PrimeNet2660.579862.1212%12000045000000.44565.1688%1.025464.0791%1.9579%
GPU722709.380364.2857%18000055000000.58383.7421%9.964165.6222%1.3365%
Difference+5+291.0054+2.3810%+110000+517500+0.1643-1.3348%+291.1697+1.8469%+1.8469%

Known prime factors:
No known factors for M25473607

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-11-22T00:00:00David J. Stuckiv4_computers2900006017500---0.748--2.407%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-12T00:00:00Net_Forcev4_computers21256--0.000--
2001-09-30T00:00:00Mattv4_computers21258--0.002--
2001-11-03T00:00:00Mattv4_computers21258--0.002--
2004-07-02T00:00:00ANONYMOUSv4_computers21267--1.166--
2016-01-15T21:26:00VictordeHollanderManual testing267268--1.173--
2017-06-02T15:28:47ramgeisManual testing268269--2.347--
2017-06-02T15:28:47ramgeisManual testing269270--4.694--
2021-06-21T06:35:15mikrManual testing270271--9.387--
2021-08-28T19:11:24TheJudgerManual testing271272--18.77--
2021-08-28T19:11:24TheJudgerManual testing272273--37.55--
2021-09-30T20:07:09TheJudgerManual testing273274--75.10--
2021-10-17T20:43:36TheJudgerManual testing274275--150.2--


ECM factoring results:
No ECM results for M25473607


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-12-13T00:00:00David J. Stuckiv4_computersDE18D172EF4ED9ED21.83
2010-10-27T06:04:00arnaudATTAX11DE18D172EF4ED9ED21.83


PRP results:
No PRP results for M25473607


P-1 factor-bounds graph:
B1 = 290000, B2 = 6017500 (P-1 stage 2)
B1 = 290000 (P-1 stage 1)
104
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106
104
105
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107
TF factor-bounds graph:
275
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258
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270
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2100
Last modified: 2021-10-17T20:43:36+00:00