is 2 74822911 - 1
has 22523941 decimal digits
takes 206.863 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
Actual275102.266964.0000%6400006400002.56561.5234%104.832664.5484%0.5484%
PrimeNet2703.193561.4286%320000140000004.27075.5558%7.464263.5715%2.1430%
GPU7227451.132363.5135%500000170000005.60824.1371%56.740565.0230%1.5095%
Difference+1+51.1346+0.4865%+140000-16360000-3.0426-2.6137%+48.0921-0.4746%-0.4746%

Known prime factors (1 factor, 97.6 bits, 0.00013049% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
748229112462598102674272976110109479613097.6361645617678971533850180
22 × 5 × 13 × 139 × 3019 × 15137 × 18269 × 54541
2015-12-141826954541670,348,0370.08120.1490

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-12-14T18:08:19Jwb52zClay6400006400003097.6362.566413.75.1311.523%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2002-03-03T00:00:00Jocelyn Larouchev4_computers21257--0.000--
Missing TF 57 - 58
Missing TF 58 - 59
Missing TF 59 - 60
Missing TF 60 - 61
Missing TF 61 - 62
Missing TF 62 - 63
Missing TF 63 - 64
2010-07-18T22:40:00RonnyKarlQuad1264265--0.050--
2010-09-24T05:39:00Dr. Nowakazm-flag265266--0.100--
2010-12-10T00:24:00Pavelcooler266267--0.200--
2011-01-16T23:54:00ANONYMOUS267268--0.399--
2011-01-17T08:58:00ANONYMOUSwork268269--0.799--
2012-12-08T03:32:00AFT2014linkager01269270--1.598--
2013-08-09T02:31:00SMoffatManual testing270271--3.196--
2015-08-28T16:45:00ChuckManual testing271272--6.392--
2015-11-29T23:48:29Matthias WurtingerManual testing272273--12.78--
2015-12-06T17:04:42TheJudgerManual testing273274--25.57--
2015-12-06T17:04:42TheJudgerManual testing274275--51.13--


ECM factoring results:
No ECM results for M74822911


Lucas-Lehmer results:
No L-L results for M74822911


PRP results:
No PRP results for M74822911


P-1 factor-bounds graph:
B1 = 640000 (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
257
250
260
270
280
290
2100
Last modified: 2015-12-14T18:08:19+00:00