is 2 51526543 - 1
has 15511036 decimal digits
takes 98.711 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
Actual2670.576761.1940 %----0.576761.1940 %
Target27337.123564.3836 %340000550000009.21693.8007 %46.340465.7372 %
Difference-6-36.5468-3.1895 %-340000-55000000-9.2169-3.8007 %-45.7637-4.5432 %

Known prime factors (1 factor, 69.0 bits, 0.00013391% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
515265435897441298998357571532168.9995722721684432
24 × 19 × 14401 × 1307183
2008-12-011440113071831.48120.23570.3695

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2008-12-01Jan Kuipersv4_computers2168.9993.1260.000%


Trial Factoring results:
5758596061626364656667686970717273
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2008-12-09Jan Kuipersv4_computers??
68.999
21
2000-01-04ANONYMOUSv4_computers212532.33000e-5
2000-02-16ANONYMOUSv4_computers212544.66000e-5
2000-04-19ANONYMOUSv4_computers212560.000
2001-05-20ANONYMOUSv4_computers212570.000
2002-02-24ANONYMOUSv4_computers212580.001
2003-11-28apocalypsev4_computers212600.001


ECM factoring results:
No ECM results for M51526543


Lucas-Lehmer results:
No L-L results for M51526543


PRP results:
No PRP results for M51526543


CERT results:
No CERT results for M51526543


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
260
258
257
256
254
253
this exponent TF target: 73
TF double-checked to: 67
250
260
270
280
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Last modified: 2024-03-13T02:15:48+00:00