is 2 33872843 - 1
has 10196742 decimal digits
takes 40.083 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
Actual27114.113963.3803%285000288105303.15575.0950%17.269665.2461%1.8658%
PrimeNet2670.877261.1940%15000055000000.75755.1822%1.634763.2050%2.0110%
GPU7227114.113963.3803%24000070000001.04373.8384%15.157764.7859%1.4056%
Difference---+45000+21810530+2.1119+1.2566%+2.1119+0.4602%+0.4602%

Known prime factors (4 factors, 158.6 bits, 0.00046809% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
3387284367745687826.0141
1
-112.640e-131.716e-63.492e-6
3387284348776893931032.18472
23 × 32
2008-09-09991.715e-111.544e-53.143e-5
33872843756719312631136.1391117
1117
2008-09-09111173.356e-100.00010.0002
33872843214727979251253305512064.219316961849425
52 × 13 × 23 × 107 × 139 × 2851
2017-08-1613928510.20600.00050.0005

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
338728433304424189013979911858.197
3387284351264469700287126811962.153
338728433691041764693601933592168.323
3387284314546894472497900792795835372890.233
33872843250052160094860407495582926332994.336
338728431047376386774162330242315455433096.403
33872843162488808861437303411542591591331100.358
33872843709552328695933409117865369988232304137122.416
3387284311007915986129757927042396597113041723139126.372
33872843792569939464637141585004012772615001080940132.542
3387284353693195044580255362392365743037578034731313078348158.555
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2022-05-27T07:30:51masserManual testing28500028810530-
skipped known factor: 67745687
skipped known factor: 4877689393
skipped known factor: 75671931263
skipped known factor: 21472797925125330551
--3.156--5.095%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-09T20:44:00Will EdgingtonManual testing??32.184102.63246e-1382.565.42204e-13
2008-09-09T20:44:00Will EdgingtonManual testing??36.139116.53436e-1182.561.34587e-10
2017-08-16T13:24:42TJAOIManual testing264265*64.219200.10182.340.207
2022-09-25T06:23:33LordJuliusManual testing2126632.184101.71549e-1182.563.53336e-11
2022-09-25T06:23:33LordJuliusManual testing2126662.153190.02282.510.046
2022-09-25T06:23:33LordJuliusManual testing2126626.01482.63989e-1382.565.43734e-13
2022-09-25T06:23:33LordJuliusManual testing2126636.139113.35610e-1082.566.91250e-10
2022-09-25T06:23:34LordJuliusManual testing2126664.219200.20682.340.423
2022-09-25T06:23:34LordJuliusManual testing2126658.197180.00282.560.005
2022-09-25T06:23:34LordJuliusManual testing266267--0.441--
2022-09-20T12:38:03masserManual testing267271--13.24--


ECM factoring results:
No ECM results for M33872843


Lucas-Lehmer results:
No L-L results for M33872843


PRP results:
No PRP results for M33872843


P-1 factor-bounds graph:
B1 = 285000, B2 = 28810530 (P-1 stage 2)
B1 = 285000 (P-1 stage 1)
100
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100
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108
TF factor-bounds graph:
271
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265
2
220
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2100
Last modified: 2022-09-25T06:23:34+00:00