is 2 75148043 - 1
has 22621816 decimal digits
takes 207.762 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
Actual275101.824564.0000%6200006200002.48551.5031%104.309964.5411%0.5411%
PrimeNet2703.179761.4286%320000140000004.27075.5587%7.450463.5727%2.1441%
GPU7227450.911063.5135%500000180000005.82664.1840%56.737765.0401%1.5266%
Difference+1+50.9134+0.4865%+120000-17380000-3.3411-2.6808%+47.5723-0.4990%-0.4990%

Known prime factors (1 factor, 88.1 bits, 0.00011720% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
751480433255886105035659511896568892788.0732166314633792698708
22 × 11 × 192 × 23 × 8867 × 25309 × 26423		2016-01-022530926423850,0540.10170.2065

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-01-02T19:21:58guruw106200006200002788.0732.485415.54.9711.503%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-07-06T00:00:00Marzbugv4_computers21263--0.021--
2004-04-20T00:00:00Marzbugv4_computers21263--0.021--
2004-11-22T00:00:00Marzbugv4_computers21265--0.097--
2004-12-23T00:00:00Marzbugv4_computers21265--0.097--
2005-01-10T00:00:00Marzbugv4_computers21265--0.097--
2010-08-05T16:42:00ANONYMOUSReserv4265266--0.099--
2010-08-10T14:38:00ANONYMOUSReserv4266267--0.199--
2010-08-19T09:53:00ANONYMOUSReserv4267268--0.398--
2010-09-09T12:06:00Simon DennisDella268269--0.796--
2012-12-03T15:20:00Robert_SoCalManual testing269270--1.591--
2014-02-21T06:57:00Choi4KANGbeat-mini270271--3.182--
2015-08-30T22:45:00Judge HaleManual testing271272--6.364--
2015-12-13T04:13:28cuBerBruceManual testing272273--12.73--
2015-12-22T09:45:05Brian BeuningManual testing273274--25.46--
2015-12-22T09:45:05Brian BeuningManual testing274275--50.91--


ECM factoring results:
No ECM results for M75148043


Lucas-Lehmer results:
No L-L results for M75148043


PRP results:
No PRP results for M75148043


P-1 factor-bounds graph:
B1 = 620000 (P-1 stage 1)
103
104
105
106
103
104
105
106
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
263
250
260
270
280
290
2100
Last modified: 2016-01-02T19:21:58+00:00