is 2 64381957 - 1
has 19380901 decimal digits
takes 156.171 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
Actual2680.925861.7647%----0.925861.7647%0.0000%
PrimeNet2703.711562.8571%280000120000003.23075.2174%6.942264.7951%1.9379%
GPU7227459.424564.8649%450000140000004.17943.8571%63.603966.2201%1.3552%
Difference-6-58.4987-3.1002%-450000-14000000-4.1794-3.8571%-62.6781-4.4554%-4.4554%

Known prime factors (4 factors, 191.7 bits, 0.00029778% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6438195734766256791031.69527
33
-27274.470e-129.497e-50.0002
64381957927100180811136.432720
24 × 32 × 5
2008-09-1116161.644e-105.628e-50.0001
64381957797853824468137931756.147619625328
24 × 3 × 7 × 1844123
2008-09-111618441230.00020.35340.6600
643819572009147974394067473532167.4451560334655868
22 × 3 × 130027887989
2022-08-0541300278879890.924624,91746,538

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
643819573223180295609589019992168.127
643819572773839094234286844751904472787.842
6438195773969042492436067698701912332892.579
643819576985055440689249443733050776873099.140
643819571862681450334785204901002888959332103.877
643819571603006395292719190466461030058663992938123.592
643819572571626725802453962270895033728847220738124.274
643819576475846162030877390308103296609087965864741135.572
643819575573053197475892259311790405354742114148813679147155.287
64381957148614751891546629435801284920820623272462655624949160.024
6438195751667786270436483492240402909692046062182868211406
11318071
58191.719
P-1 results:
No P-1 results for M64381957


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-11T06:40:00Will EdgingtonManual testing??36.432112.21600e-11321.54.56264e-11
2015-03-12T12:09:00TJAOIManual testing256257*56.147175.42184e-6321.51.11633e-5
2022-08-10T19:29:27LordJuliusManual testing2126731.695104.46951e-12321.59.20252e-12
2022-08-10T19:29:27LordJuliusManual testing2126756.147170.000321.50.000
2022-08-10T19:29:27LordJuliusManual testing2126736.432111.64353e-10321.53.38396e-10
2022-08-05T09:32:53TJAOIManual testing267268*67.445210.463320.60.951
2022-08-10T19:29:27LordJuliusManual testing26726867.445210.463320.60.951


ECM factoring results:
No ECM results for M64381957


Lucas-Lehmer results:
No L-L results for M64381957


PRP results:
No PRP results for M64381957


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
TF factor-bounds graph:
268
267
257
2
230
240
250
260
270
280
290
2100
Last modified: 2022-08-10T19:29:27+00:00