is 2 52178449 - 1
has 15707279 decimal digits
takes 99.960 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
Actual2692.288062.3188 %----2.288062.3188 %
Target27336.659764.3836 %340000550000009.21693.8069 %45.876665.7394 %
Difference-4-34.3716-2.0647 %-340000-55000000-9.2169-3.8069 %-43.5885-3.4206 %

Known prime factors (1 factor, 81.3 bits, 0.00015574% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5217844929013417568889589600508572581.26327802108078077972
22 × 3 × 41 × 491 × 1493 × 6949 × 11093
2011-08-2169491109312,0920.01990.0393

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-08-21ixfd64tsbu-reg-acer-12581.2631.6810.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-12-01ANONYMOUSv4_computers212532.30000e-5
2000-02-23ANONYMOUSv4_computers212544.60000e-5
2000-05-05ANONYMOUSv4_computers212560.000
2001-06-09ANONYMOUSv4_computers212570.000
2002-04-14ANONYMOUSv4_computers212580.001
2003-11-161997rj7v4_computers212590.001
2004-02-071997rj7v4_computers212600.001
2006-12-18ANONYMOUSv4_computers212640.038
2008-12-05lycornkangoo2642650.072
2008-12-08Lacko52Iroda_Andras2652660.143
2008-12-10tmorrowMoo22662670.286
2009-04-26Casey D2672680.573
2010-03-23oodaira052682691.146


ECM factoring results:
No ECM results for M52178449


Lucas-Lehmer results:
No L-L results for M52178449


PRP results:
No PRP results for M52178449


CERT results:
No CERT results for M52178449


P-1 factor-bounds graph:
102
103
104
102
103
104
105
TF factor-bounds graph:
269
268
267
266
265
264
260
259
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
290
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Last modified: 2024-03-13T02:15:48+00:00