is 2 56248447 - 1
has 16932470 decimal digits
takes 119.215 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
Actual2718.499463.3803%----8.499463.3803%0.0000%
PrimeNet2692.122562.3188%240000100000002.37175.3706%4.494264.3425%2.0237%
GPU7227334.007164.3836%400000130000003.33904.0617%37.346065.8302%1.4466%
Difference-2-25.5077-1.0033%-400000-13000000-3.3390-4.0617%-28.8466-2.4499%-2.4499%

Known prime factors (1 factor, 83.3 bits, 0.00014805% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
56248447116924710691328989595085512683.274103935945726047325
3 × 52 × 11 × 17 × 101 × 16223 × 4522831		2012-04-0216223452283165,9210.80441.4144

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-04-02T10:22:00Jwb52zClay2683.274-238.4-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-15T00:00:00ANONYMOUSv4_computers21253--2.13326e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers21253--2.13326e-5--
2000-03-08T00:00:00ANONYMOUSv4_computers21254--4.26651e-5--
2000-06-11T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-22T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-09-14T00:00:00ANONYMOUSv4_computers21258--0.001--
2004-10-03T00:00:001997rj7v4_computers21260--0.003--
Missing TF 60 - 61
Missing TF 61 - 62
Missing TF 62 - 63
2008-07-10T01:39:00Sturle Sundeklughardt.ifi263264--0.035--
2008-07-10T12:03:00Sturle Sundeklengel.ifi264265--0.066--
2008-07-10T21:22:00Sturle Sundeinteravia.ifi265266--0.133--
2008-07-11T14:51:00Sturle Sundeklughardt.ifi266267--0.266--
2009-11-20T01:05:00David Barleyold_ken267268--0.531--
2011-04-13T00:53:00ANONYMOUS268269--1.063--
2011-08-12T16:08:00HighPriceRanchud3rab269270--2.126--
2011-09-06T11:35:00ANONYMOUStest270271--4.251--


ECM factoring results:
No ECM results for M56248447


Lucas-Lehmer results:
No L-L results for M56248447


PRP results:
No PRP results for M56248447


P-1 factor-bounds graph:
103
104
105
103
104
105
106
107
TF factor-bounds graph:
271
270
269
268
267
266
265
264
260
258
257
256
254
253
250
260
270
280
290
2100
Last modified: 2012-04-02T10:22:29+00:00