is 2 55442743 - 1
has 16689929 decimal digits
takes 117.508 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
Actual27217.249063.8889%----17.249063.8889%0.0000%
PrimeNet2692.153362.3188%240000100000002.37175.3609%4.525164.3389%2.0201%
GPU7227334.501364.3836%360000120000003.05533.9341%37.556665.7847%1.4012%
Difference-1-17.2522-0.4947%-360000-12000000-3.0553-3.9341%-20.3075-1.8959%-1.8959%

Known prime factors (1 factor, 72.8 bits, 0.00013133% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
5544274382940840398017726404472272.81374798644430361
3 × 1019 × 3019 × 8104667
2012-04-083019810466719.5681.36582.5345

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-04-08T02:51:00Jwb52zClay2272.813-235.0-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-15T00:00:00ANONYMOUSv4_computers21253--2.16426e-5--
2000-01-19T00:00:00ANONYMOUSv4_computers21253--2.16426e-5--
2000-03-01T00:00:00ANONYMOUSv4_computers21254--4.32851e-5--
2000-05-31T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-09-22T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-07-20T00:00:00ANONYMOUSv4_computers21258--0.001--
2008-12-22T19:45:001997rj7compw263264--0.035--
2009-01-03T13:13:00Sturle Sundegimo.ifi264265--0.067--
2009-01-11T23:50:00ahmeraliv4_computers21270--4.310--
2009-01-14T00:00:00ahmeraliv4_computers21270--4.310--
2012-04-01T16:23:00GregManual testing270271--4.313--
2012-04-01T19:23:00GregManual testing271272--8.626--


ECM factoring results:
No ECM results for M55442743


Lucas-Lehmer results:
No L-L results for M55442743


PRP results:
No PRP results for M55442743


P-1 factor-bounds graph:
102
103
104
102
103
104
105
106
107
TF factor-bounds graph:
272
271
270
265
264
258
257
256
254
253
250
260
270
280
290
2100
Last modified: 2012-04-08T02:51:26+00:00