is 2 25224439 - 1
has 7593313 decimal digits
takes 21.616 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L1B69308161F1056Adouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27237.913065.2778%31000076725000.88363.5213%38.796666.5005%1.2227%
PrimeNet2660.585562.1212%11000040000000.40004.9835%0.985564.0089%1.8877%
GPU722709.473064.2857%18000055000000.58383.7371%10.056865.6204%1.3347%
Difference+2+28.4400+0.9921%+130000+2172500+0.2998-0.2158%+28.7398+0.8801%-0.1120%

Known prime factors:
No known factors for M25224439

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-11-03T00:00:00ANONYMOUSv4_computers3100007672500---0.884--3.521%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-12T00:00:00Net_Forcev4_computers21256--0.000--
2001-08-24T00:00:00Mattv4_computers21258--0.002--
2003-12-31T00:00:00markrv4_computers21262--0.024--
2004-05-15T00:00:00ANONYMOUSv4_computers21267--1.178--
2016-01-04T21:26:14VictordeHollanderManual testing267268--1.185--
2017-06-16T01:07:23ramgeisManual testing268269--2.370--
2017-06-16T01:07:23ramgeisManual testing269270--4.740--
2021-01-08T11:21:37-Anonymous-Manual testing270271--9.480--
2021-01-08T11:21:37-Anonymous-Manual testing271272--18.96--


ECM factoring results:
No ECM results for M25224439


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2004-11-30T00:00:00ANONYMOUSv4_computers1B69308161F1056A21.62
2010-09-05T15:19:00S530729Q84001B69308161F1056A21.62


PRP results:
No PRP results for M25224439


P-1 factor-bounds graph:
B1 = 310000, B2 = 7672500 (P-1 stage 2)
B1 = 310000 (P-1 stage 1)
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TF factor-bounds graph:
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2100
Last modified: 2021-01-08T11:21:37+00:00