is 2 72605201 - 1
has 21856344 decimal digits
takes 194.118 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
Actual2716.584661.9718 %----6.584661.9718 %
Target27452.694163.5135 %5000008500000019.78614.1218 %72.480265.0174 %
Difference-3-46.1095-1.5417 %-500000-85000000-19.7861-4.1218 %-65.8955-3.0456 %

Known prime factors (1 factor, 68.8 bits, 0.00009471% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
726052015009902237830612899832168.7633450098731791
3 × 17 × 1297 × 2357 × 22129
2015-01-222357221291.04390.01330.0186

P-1 results:
No P-1 results for M72605201


Trial Factoring results:
575859606162636465666768697071727374
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2002-05-25Jossv4_computers212570.000
2022-05-21LordJuliusManual testing21264
2010-05-25ANONYMOUS2642650.051
2010-05-28ANONYMOUS2652660.103
2010-06-04Hrudey4098Office_12662670.206
2010-06-09SAHS Physics Clubphysicsclub42672680.412
2010-06-09sannerud.comJimEmcLap2682690.823
2015-01-22Sid & AndyManual testing268269
68.763
21
0.629
2012-10-07ANONYMOUS2692701.647
2012-11-24ArtfulDodgerDodger-12702713.294


ECM factoring results:
No ECM results for M72605201


Lucas-Lehmer results:
No L-L results for M72605201


PRP results:
No PRP results for M72605201


CERT results:
No CERT results for M72605201


P-1 factor-bounds graph:
102
103
104
102
103
104
105
TF factor-bounds graph:
271
270
269
268
267
266
265
264
257
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