is 2 50664613 - 1
has 15251569 decimal digits
takes 92.815 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
Actual27218.875863.8889 %----18.875863.8889 %
Target27337.755064.3836 %340000550000008.81373.7925 %46.568865.7343 %
Difference-1-18.8793-0.4947 %-340000-55000000-8.8137-3.7925 %-27.6930-1.8454 %

Known prime factors (1 factor, 81.5 bits, 0.00016087% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5066461334317126086287479579324232581.50533866957679403847
547 × 21821 × 28697 × 98873
2011-12-15286979887312,4010.08640.1551

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2011-12-15Kevin JagetWorkstation2581.5051.3020.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1999-10-15ANONYMOUSv4_computers212532.37000e-5
2000-02-09ANONYMOUSv4_computers212544.74000e-5
2000-04-12ANONYMOUSv4_computers212560.000
2001-04-15ANONYMOUSv4_computers212570.000
2002-01-08ANONYMOUSv4_computers212580.001
2003-08-25ANONYMOUSv4_computers212590.001
2003-11-08ANONYMOUSv4_computers212600.002
2008-09-11DerekManual testing212640.037
2009-02-05driveByUpgradesAthlon12642650.074
2009-02-07korvaIBMlap12652670.442
2009-02-22SyntonyManual testing2672691.770
2008-11-21SyntonyJetstream2682691.180
2011-11-13NumberwangManual testing2692717.080
2011-11-28XyzzyManual testing2712729.440


ECM factoring results:
No ECM results for M50664613


Lucas-Lehmer results:
No L-L results for M50664613


PRP results:
No PRP results for M50664613


CERT results:
No CERT results for M50664613


P-1 factor-bounds graph:
103
104
105
103
104
105
TF factor-bounds graph:
272
271
269
267
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