is 2 260213 - 1
has 78332 decimal digits
takes 0.002 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
Actualunknown30000000100358126969105,417.947373.0585%5,417.947373.0585%73.0585%
PrimeNet2400.000055.0000%2800700000.000114.4044%0.000161.4820%6.4820%
GPU722440.000059.0909%50001200000.000110.5533%0.000163.4082%4.3172%
Difference-440.0000-59.0909%+29995000+10035812576910+5,417.9472+62.5052%+5,417.9472+9.6503%+68.7412%

Known prime factors (2 factors, 159.0 bits, 0.06109477% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
260213250028263191134.54148043
107 × 449
-1074491.230e-81.245e-62.158e-6
2602132875498589358256992256705909280162527138124.43555252785013782112966237388394895
5 × 7 × 19 × 83 × 109 × 3019 × 57947 × 60083 × 184903 × 4725397
2016-10-2418490347253975.476e+110.00430.0048

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
26021371895591810254001245961745712792873977173430744948158.977
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-10-24T07:01:02kkmrkkblmbrbkManual testing5000000500000038124.4350.0500.0040.09923.304%
2021-09-15T14:17:21Oliver KruseOllaptop30000000300000000024-
skipped known factor: 25002826319
skipped known factor: 28754985893582569922567059092801625271
--1.901--44.100%
2022-05-02T14:52:19Oliver KruseThreadripper-PC3000000010035812696910-
skipped known factor: 25002826319
skipped known factor: 28754985893582569922567059092801625271
--5,418--63.206%


Trial Factoring results:
No TF results for M260213


ECM factoring results:
Total ECM effort:12.368 GHz-days
Estimated T-Level:27.505
DigitsB1CompleteFacMiss
201100036.4260.000%
25500004.9610.700%
302500000.50160.591%
3510000000.04096.072%
4030000000.00399.737%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002812.049
250000250000002519.149
2500003350000070.284
2500003525000070.290
2500003675000070.295
2500003850000070.301


Lucas-Lehmer results:
No L-L results for M260213


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22T08:21:11Oliver KruseOllaptop2F3B9EAAD44959__?
2017-09-22T10:06:51Oliver KruseManual testing2F3B9EAAD44959__?
2017-10-12T17:28:27Oliver KruseGTX-22F3B9EAAD44959__no
2017-11-06T17:28:46kkmrkkblmbrbkc4.xlarge
25002826319
28754985893582569922567059092801625271
2F3B9EAAD44959__no
2020-04-17T21:09:56Oliver KruseAddPrpType5
25002826319
28754985893582569922567059092801625271
AB9C4DB2D3C8D7__no


P-1 factor-bounds graph:
B1 = 30000000, B2 = 10035812696910 (P-1 stage 2)
B1 = 30000000, B2 = 3000000000 (P-1 stage 2)
B1 = 30000000 (P-1 stage 1)
B1 = 5000000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-09-14T20:48:59+00:00