is 2 7003327 - 1
has 2108212 decimal digits
takes 1.527 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-L6B6803E394A6AB22double-checked
PRP808756FD959119__verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual272136.554268.0556%1200000050000000012.20068.8845%148.754870.8937%2.8381%
PrimeNet2630.227963.4921%300008000000.02273.3138%0.250664.7019%1.2098%
GPU722674.242865.6716%450009000000.02902.2407%4.271866.4408%0.7692%
Difference+5+132.3114+2.3839%+11955000+499100000+12.1717+6.6438%+144.4830+4.4528%+4.4528%

Known prime factors (1 factor, 91.8 bits, 0.00131092% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
700332743348672977217587207526179592891.808309486283999144886477
71 × 263 × 1889 × 153059 × 57323999
2021-03-1515305957323999119,298,4641.03321.8443

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-09-30T00:00:00ANONYMOUSv4_computers35000481250---0.019--0.891%
2011-11-28T02:51:00bcp19HP-2400850001530000---0.052--1.574%
2015-06-02T07:34:00Squeeky_SquirrelP4_26001800004230000---0.127--2.367%
2021-03-15T18:17:01mikrNitron12000000500000000122891.80812.203.05424.408.884%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1998-09-20T00:00:00ANONYMOUSv4_computers21262--0.088--
2001-09-30T00:00:00ANONYMOUSv4_computers21263--0.228--
2014-02-06T08:04:00NesowaManual testing263264--0.280--
2014-02-13T22:32:00ANONYMOUSManual testing264265--0.534--
2015-06-12T10:16:00VictordeHollanderManual testing265266--1.067--
2016-04-26T18:24:30america64Manual testing266267--2.134--
2016-06-09T11:50:28kkmrkkblmbrbkManual testing267268--4.268--
2016-06-15T12:43:37ramgeisManual testing268269--8.536--
2016-06-15T12:43:37ramgeisManual testing269270--17.07--
2016-06-15T12:43:37ramgeisManual testing270271--34.14--
2020-10-29T16:55:40mikrManual testing271272--68.29--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.989 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

New Calculation Method

Total ECM effort:1.989 GHz-days
Estimated T-Level:0.300
DigitsB1CompleteFacMiss
20110000.19482.403%
25500000.01798.266%
302500000.00199.892%


ECM Summary

B1B2factorcurvesGHz-days
50000500000061.989


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-04-02T00:00:00ANONYMOUSv4_computersB6C36449EBD91B__1.527
1999-09-14T00:00:00ANONYMOUSv4_computers6B6803E394A6AB221.527
2001-10-20T00:00:00ANONYMOUSv4_computers6B6803E394A6AB221.527


PRP results:
dateuseridcompidcofactorsres64PRP
2021-03-15T23:44:46MarkSdesktop-i7
4334867297721758720752617959
808756FD959119__no


P-1 factor-bounds graph:
B1 = 12000000, B2 = 500000000 (P-1 stage 2)
B1 = 12000000 (P-1 stage 1)
B1 = 180000, B2 = 4230000 (P-1 stage 2)
B1 = 180000 (P-1 stage 1)
B1 = 85000, B2 = 1530000 (P-1 stage 2)
B1 = 85000 (P-1 stage 1)
B1 = 35000, B2 = 481250 (P-1 stage 2)
B1 = 35000 (P-1 stage 1)
103
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109
TF factor-bounds graph:
272
271
270
269
268
267
266
265
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263
262
250
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270
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2100
Last modified: 2021-03-15T23:44:46+00:00