is 2 487001663 - 1
has 146602109 decimal digits
takes 11,401.137 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2822,011.218564.6341 %2800000280000095.04821.6937 %2,106.266765.2331 %
Target2822,011.218564.6341 %28000006000000001,199.54544.3212 %3,210.763966.1624 %
Difference-----597200000-1,104.4972-2.6276 %-1,104.4972-0.9293 %

Known prime factors (1 factor, 97.3 bits, 0.00001998% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4870016631939176998935496282525503852093097.291199093467873383451108
22 × 32 × 134 × 19 × 2207 × 45751 × 100931
2021-04-094575110093165,903,6211.65513.1607

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-04-09KrieselManual testing2800000280000013097.29194.001.694%


Trial Factoring results:
5758596061626364656667686970717273747576777879808182
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-02Architects CubedManual testing2632640.004
2011-12-16tscc012642650.008
2014-10-20firereddont1112652660.015
2016-03-26sasakiManual testing2662670.031
2016-06-27sasakiManual testing2672680.061
2016-12-16ConductorManual testing2682690.123
2017-02-24YxinityManual testing2692700.246
2020-05-31SRBaseManual testing2702710.491
2020-08-21SRBaseManual testing2712720.982
2021-03-04ANONYMOUSAMD8-ubuntu2722731.964
2021-04-13KrieselManual testing273274
2021-04-13KrieselManual testing274275
2021-04-13KrieselManual testing275276
2021-04-13KrieselManual testing276277
2021-04-13KrieselManual testing277278
2021-04-13KrieselManual testing278279
2021-04-13KrieselManual testing279280
2021-04-13KrieselManual testing280281
2021-04-13KrieselManual testing281282


ECM factoring results:
No ECM results for M487001663


Lucas-Lehmer results:
No L-L results for M487001663


PRP results:
No PRP results for M487001663


CERT results:
No CERT results for M487001663


P-1 factor-bounds graph:
B1 = 2800000 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
TF factor-bounds graph:
282
281
280
279
278
277
276
275
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 82
TF double-checked to: 67
250
260
270
280
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2100
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00