is 2 73505849 - 1
has 22127466 decimal digits
takes 203.222 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
Actual275104.099364.0000 %630000126000005.13993.6367 %109.239265.3092 %
Target27452.048563.5135 %5000008500000020.46024.1280 %72.508665.0197 %
Difference+1+52.0509+0.4865 %+130000-72400000-15.3202-0.4914 %+36.7306+0.2895 %

Known prime factors (1 factor, 96.1 bits, 0.00013077% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
73505849861771611784553353328671058092996.121586192543524361818696
23 × 3 × 61 × 241 × 997 × 335669 × 4964503
2015-11-243356694964503220,018,3092.35662.7386

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2015-11-24Jimmy BrüggemannManual testing63000012600000622996.1215.2424.008%


Trial Factoring results:
57585960616263646566676869707172737475
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2002-02-17Jossv4_computers212570.000
2010-06-08Grange Julien2642650.051
2010-06-13Martin RehrmannLINUX2652660.102
2010-08-19Tom Duellv4_computers212703.050
2010-10-02Tom Duellv4_computers212701.627
2014-07-29Mark RoseManual testing2702713.253
2015-01-09RichD0Manual testing2712726.506
2015-09-18cuBerBruceManual testing27227313.01
2015-09-28endless_mikeManual testing27327578.08


ECM factoring results:
No ECM results for M73505849


Lucas-Lehmer results:
No L-L results for M73505849


PRP results:
No PRP results for M73505849


CERT results:
No CERT results for M73505849


P-1 factor-bounds graph:
B1 = 630000, B2 = 12600000 (P-1 stage 2)
B1 = 630000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
275
273
272
271
270
266
265
257
this exponent TF target: 74
TF double-checked to: 67
250
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270
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2100
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Last modified: 2024-03-13T02:15:48+00:00