is 2 62200081 - 1
has 18724091 decimal digits
takes 146.113 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
Actual27215.375163.8889 %----15.375163.8889 %
Target27461.509064.8649 %4000006500000013.35073.7233 %74.859766.1731 %
Difference-2-46.1339-0.9760 %-400000-65000000-13.3507-3.7233 %-59.4846-2.2842 %

Known prime factors (1 factor, 72.7 bits, 0.00011683% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
6220008175066315223428476824792272.66960342618543719
53 × 103 × 653 × 1249 × 13553
2013-03-0612491355330.1510.00650.0087

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2013-03-06Simon HarrisonManual testing2272.6692.9320.000%


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2003-06-30Gordon Spencev4_computers212590.001
2022-03-30LordJuliusManual testing21263
2008-12-28DerekDerek_Desk2632640.032
2009-08-10ANONYMOUS2642650.060
2009-08-16ANONYMOUSC1F84B3FE2652660.120
2009-08-20OS1majjaNy2662670.240
2009-08-21seekuaseekua-home2672680.481
2009-08-29LEE Sau Dandanp42682690.961
2012-09-11Carsten KossendeyManual testing2692715.767
2013-02-18bcp19Manual testing2712727.689


ECM factoring results:
No ECM results for M62200081


Lucas-Lehmer results:
No L-L results for M62200081


PRP results:
No PRP results for M62200081


CERT results:
No CERT results for M62200081


P-1 factor-bounds graph:
102
103
104
102
103
104
105
TF factor-bounds graph:
272
271
269
268
267
266
265
264
263
259
this exponent TF target: 74
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00