is 2 75754391 - 1
has 22804344 decimal digits
takes 209.438 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275101.009464.0000%625000117187504.92853.5926%105.937965.2934%1.2934%
PrimeNet2703.154361.4286%320000140000004.27075.5642%7.425063.5747%2.1462%
GPU7227450.503663.5135%500000180000005.82664.1881%56.330265.0416%1.5281%
Difference+1+50.5059+0.4865%+125000-6281250-0.8981-0.5955%+49.6078+0.2517%+0.2517%

Known prime factors (1 factor, 77.9 bits, 0.00010277% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
757543912733670182081761231585832477.8551804298170703901
3 × 101 × 241 × 3347 × 7382321
2016-04-2333477382321642.011.62513.0115

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-04-23T04:36:41Jwb52zClay625000117187502477.8554.929418.99.863.593%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2004-10-03T00:00:00Marzbugv4_computers21263--0.021--
2009-05-30T21:59:00Architects Cubedm1_16263264--0.026--
2010-08-19T02:29:00Thomas FehrLinux_TR_SuSE264265--0.049--
2010-08-19T07:44:00dmbeesonfrodo265266--0.099--
2010-08-25T22:53:00ixfd64wkchia-ibmlap266267--0.197--
2010-11-01T05:57:00ANONYMOUS267268--0.395--
2011-01-04T02:18:00PrimeCruncherApollo8268269--0.789--
2011-01-06T03:16:00ANONYMOUSGagWuxe102269270--1.578--
2012-12-16T22:06:00C.D.B.i7-2600K_4500MHz270271--3.157--
2013-02-19T16:11:00Never Odd Or EvenManual testing271272--6.313--
2016-03-02T02:19:541997rj7Manual testing272273--12.63--
2016-04-08T21:56:46Judge HaleManual testing273274--25.25--
2016-04-18T11:50:25AirSquirrelsManual testing274275--50.51--


ECM factoring results:
No ECM results for M75754391


Lucas-Lehmer results:
No L-L results for M75754391


PRP results:
No PRP results for M75754391


P-1 factor-bounds graph:
B1 = 625000, B2 = 11718750 (P-1 stage 2)
B1 = 625000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2016-04-23T04:36:41+00:00