is 2 2700233 - 1
has 812852 decimal digits
takes 0.209 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L97CAB581F226B442double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26711.004267.1642%150002175000.00290.9203%11.007167.4664%0.3022%
PrimeNet2590.028462.7119%120002200000.00262.8431%0.031163.7720%1.0601%
GPU722630.591165.0794%140002200000.00281.6613%0.593965.6595%0.5801%
Difference+4+10.4131+2.0848%+1000-2500+0.0001-0.7410%+10.4132+1.8069%+1.8069%

Known prime factors (1 factor, 74.8 bits, 0.00277142% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2700233336920648340264209621992374.8356238732886018803
23 × 271249255913861
2009-03-11232712492559138612,626.21,655,0693,091,208

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-11-08T00:00:00ANONYMOUSv4_computers2048204800---0.001--0.297%
2003-11-28T00:00:00Team Prime Ribv4_computers15000217500---0.003--0.920%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-01-31T12:20:00Sturle Sundedittersdorf.ifi260261--0.057--


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-13T00:00:00ANONYMOUSv4_computers97CAB581F226B4420.209


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-19T11:25:42Oliver KruseGTX-1
33692064834026420962199
4F6D6B9FECCDA0__no
2017-12-04T11:46:37kkmrkkblmbrbkc4.xlarge
33692064834026420962199
4F6D6B9FECCDA0__no


P-1 factor-bounds graph:
B1 = 15000, B2 = 217500 (P-1 stage 2)
B1 = 15000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2017-12-04T11:46:37+00:00