is 2 77349719 - 1
has 23284586 decimal digits
takes 218.083 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LB2083F24EE440E__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27598.926164.0000%62000093000004.46803.4269%103.394265.2337%1.2337%
PrimeNet2703.089261.4286%340000160000004.87805.7528%7.967363.6475%2.2190%
GPU7227449.461963.5135%500000180000005.94204.1988%55.403965.0455%1.5320%
Difference+1+49.4642+0.4865%+120000-8700000-1.4739-0.7719%+47.9903+0.1882%+0.1882%

Known prime factors:
No known factors for M77349719

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-02-29T02:30:38zzfwind2007bank6200009300000---4.468--3.427%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-17T00:00:00ANONYMOUSv4_computers21253--1.55130e-5--
2003-12-02T00:00:00ANONYMOUSv4_computers21261--0.004--
2016-04-04T01:02:02Mark RoseManual testing261264--0.042--
2010-12-10T05:50:00lindedKCTZ74W-SH208264265--0.048--
2011-02-13T23:38:00Fred Cirera265266--0.097--
2011-02-20T12:45:00Trex266267--0.193--
2011-02-26T05:44:00Gnorfe267268--0.386--
2011-03-03T21:59:00MerckosC2Duo268269--0.773--
2011-03-08T15:07:00MerckosC2Duo269270--1.546--
2013-10-28T23:40:00SMoffatManual testing270271--3.092--
2014-01-02T06:38:00Houd Al-Obaidlihpi7271272--6.183--
2016-02-18T23:25:24AirSquirrelsManual testing272273--12.37--
2016-02-19T00:15:21AirSquirrelsManual testing273274--24.73--
2016-02-19T01:45:26AirSquirrelsManual testing274275--49.46--


ECM factoring results:
No ECM results for M77349719


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2016-12-23T00:26:27Xolotltopaz-gpu-07B2083F24EE440E__218.1


PRP results:
No PRP results for M77349719


P-1 factor-bounds graph:
B1 = 620000, B2 = 9300000 (P-1 stage 2)
B1 = 620000 (P-1 stage 1)
104
105
106
104
105
106
107
TF factor-bounds graph:
275
274
273
272
271
270
269
268
267
266
265
264
261
253
250
260
270
280
290
2100
Last modified: 2016-12-23T00:26:27+00:00