is 2 6507217 - 1
has 1958868 decimal digits
takes 1.220 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
Actual2689.159866.1765%----9.159866.1765%
Target2662.269565.1515%4500010000000.02642.5796%2.295966.0505%
Difference+2+6.8903+1.0250%-45000-1000000-0.0264-2.5796%+6.8639+0.1260%

Known prime factors (6 factors, 280.6 bits, 0.00431204% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
650721714055588731030.388108
22 × 33
-27272.250e-117.338e-61.493e-5
65072171132125613671236.7208699
8699
2008-09-08186992.649e-90.00010.0002
65072172208815334686631547.65016972043
11 × 167 × 9239
2014-03-1216792394.617e-60.00020.0003
65072173403771642378811548.27426153820
22 × 33 × 5 × 7 × 11 × 17 × 37
2014-04-0127375.762e-67.486e-61.493e-5
65072179096261647997611549.69269893640
23 × 32 × 5 × 194149
2014-05-0891941491.721e-50.00290.0054
65072172694439719930318644232167.86920703472159683
3 × 19 × 941 × 385992359
2022-11-299413859923595.64315.715610.675

57 Composite Factors:
P-1 results:
No P-1 results for M6507217


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08Will EdgingtonManual testing??36.720121.24211e-92.5742.62171e-9
2014-03-12TJAOIManual testing??47.650151.73560e-62.5743.66330e-6
2014-04-01TJAOIManual testing??48.27415-2.574-
2014-05-08TJAOIManual testing??49.692155.68763e-62.5741.20047e-5
2022-11-29LordJuliusManual testing2126336.720122.64896e-92.5745.59113e-9
2022-11-29LordJuliusManual testing2126330.388102.24959e-112.5744.74819e-11
2022-11-29LordJuliusManual testing2126347.650154.61683e-62.5749.74467e-6
2022-11-29LordJuliusManual testing2126348.274155.76246e-62.5741.21627e-5
2022-11-29LordJuliusManual testing2126349.692151.72126e-52.5743.63300e-5
2022-11-29LordJuliusManual testing263264--0.302--
2022-11-29LordJuliusManual testing264265--0.574--
2022-11-29LordJuliusManual testing265266--1.148--
2022-11-29LordJuliusManual testing266267--2.297--
2022-11-29LordJuliusManual testing267268
skipped known factors(?)
--4.594--
2022-11-29LordJuliusManual testing26726867.869211.0772.4802.189


ECM factoring results:
No ECM results for M6507217


Lucas-Lehmer results:
No L-L results for M6507217


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-09kkmrkkblmbrbkManual testing
1405558873
113212561367
220881533468663
340377164237881
909626164799761
9603B6C3BBF631__no
2018-09-30ANONYMOUS
1405558873
113212561367
220881533468663
340377164237881
909626164799761
9603B6C3BBF631__no
2022-11-30LordJuliusi79700_Para
1405558873
113212561367
220881533468663
340377164237881
909626164799761
269443971993031864423
ADD7B766B975A3C6no


P-1 factor-bounds graph:
100
101
102
103
100
101
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
264
263
2
230
240
250
260
270
280
290
2100
Last modified: 2022-11-30T15:10:10+00:00