is 2 571263211 - 1
has 171967362 decimal digits
takes 15,504.110 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
Actual2733.348458.9041%----3.348458.9041%0.0000%
PrimeNet279214.320162.0253%2000000140000000374.58695.6110%588.907064.1561%2.1308%
GPU722833,429.126363.8554%3200000140000000419.23774.2041%3,848.364165.3750%1.5196%
Difference-10-3,425.7779-4.9513%-3200000-140000000-419.2377-4.2041%-3,845.0156-6.4709%-6.4709%

Known prime factors:
No known factors for M571263211

P-1 results:
No P-1 results for M571263211


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2011-06-09T01:15:00Architects Cubeda3_pv264265--0.007--
2014-11-01T12:51:00sasakiubuntu265266--0.013--
2015-10-24T00:30:35sasakiManual testing266267--0.026--
2016-12-25T14:29:23sasakiManual testing267268--0.052--
2018-05-06T20:32:37srow7sys4268269--0.105--
2018-10-13T09:21:48Niels_Mache_NextcloudManual testing269270--0.209--
2020-01-29T22:56:34sasakioffice-2270271--0.419--
2020-09-06T06:50:35SRBaseManual testing271272--0.837--
2021-04-06T15:58:12SRBaseManual testing272273--1.674--


ECM factoring results:
No ECM results for M571263211


Lucas-Lehmer results:
No L-L results for M571263211


PRP results:
No PRP results for M571263211


TF factor-bounds graph:
273
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2100
Last modified: 2021-04-06T15:58:12+00:00