is 2 78647743 - 1
has 23675330 decimal digits
takes 245.419 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2670.377859.7015%----0.377859.7015%0.0000%
PrimeNet2716.078761.9718%340000160000005.39895.2360%11.477663.9630%1.9911%
GPU7227597.293464.0000%500000170000006.32993.7747%103.623365.3589%1.3589%
Difference-8-96.9156-4.2985%-500000-17000000-6.3299-3.7747%-103.2455-5.6574%-5.6574%

Known prime factors (3 factors, 134.5 bits, 0.00017105% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
7864774312583638891030.2298
23
-881.822e-123.620e-57.367e-5
786477431280920060692411546.864814340
22 × 5 × 19 × 2143
2008-09-291921431.507e-70.00060.0010
786477431942619009985996471857.4311235012561
47 × 26276863
2015-06-1847262768630.00046.477912.099

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
786477431611863549071017080382492477.093
786477432444521612251308353529471832787.660
786477432488339660173492026216592015792732104.295
786477433131236771928853840820400685319251389810341134.524
P-1 results:
No P-1 results for M78647743


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-29T07:21:00markrManual testing??46.864153.14757e-8506.16.49096e-8
2015-06-18T11:51:00TJAOIManual testing257258*57.431180.000506.10.000


ECM factoring results:
No ECM results for M78647743


Lucas-Lehmer results:
No L-L results for M78647743


PRP results:
No PRP results for M78647743


P-1 factor-bounds graph:
100
101
102
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
258
2
230
240
250
260
270
280
290
2100
Last modified: 2015-06-18T11:51:00+00:00