is 2 54219421 - 1
has 16321673 decimal digits
takes 107.121 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
Actual2718.817563.3803%----8.817563.3803%0.0000%
PrimeNet2692.201962.3188%240000100000002.21095.3460%4.412864.3333%2.0145%
GPU7227335.279764.3836%360000120000002.84813.9229%38.127865.7808%1.3972%
Difference-2-26.4622-1.0033%-360000-12000000-2.8481-3.9229%-29.3103-2.4005%-2.4005%

Known prime factors (1 factor, 94.5 bits, 0.00017433% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
54219421284525443601613893588321593192994.523262383329030398437479
22877 × 25409 × 190181 × 2373463
2012-02-17190181237346399,923,5530.88561.1088

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2012-02-17T17:55:00Jwb52zClay2994.523-214.2-0.000%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-12-08T00:00:00ANONYMOUSv4_computers21253--2.21309e-5--
2000-01-12T00:00:00ANONYMOUSv4_computers21253--2.21309e-5--
2000-03-01T00:00:00ANONYMOUSv4_computers21254--4.42617e-5--
2000-05-31T00:00:00ANONYMOUSv4_computers21256--0.000--
2001-08-26T00:00:00ANONYMOUSv4_computers21257--0.000--
2002-08-31T00:00:00ANONYMOUSv4_computers21258--0.001--
2003-04-27T00:00:00oerwinv4_computers21259--0.001--
2003-11-28T00:00:00oerwinv4_computers21262--0.011--
2008-05-10T00:00:00ANONYMOUSv4_computers21263--0.029--
2008-12-15T00:25:001997rj7Manual testing21264--0.066--
2008-12-24T16:43:00AlJomar264265--0.069--
2008-12-27T14:25:00Helmut Zulusz5265266--0.138--
2009-01-12T11:33:00ANONYMOUS266267--0.276--
2009-09-05T08:37:00Sturle Sundefungo.ifi267268--0.551--
2011-04-02T21:01:00Martin RehrmannLINUX268269--1.103--
2011-05-26T13:18:00PiepenC7F7F6027269270--2.205--
2011-09-08T01:46:00XyzzyManual testing270271--4.410--


ECM factoring results:
No ECM results for M54219421


Lucas-Lehmer results:
No L-L results for M54219421


PRP results:
No PRP results for M54219421


P-1 factor-bounds graph:
104
105
106
104
105
106
107
TF factor-bounds graph:
271
270
269
268
267
266
265
264
263
262
259
258
257
256
254
253
250
260
270
280
290
2100
Last modified: 2012-02-17T17:55:29+00:00