is 2 77037767 - 1
has 23190679 decimal digits
takes 217.204 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LFF25D4DF7F4515__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual27599.326764.0000%43700016613415038.69335.3672%138.020065.9322%1.9322%
PrimeNet2703.101761.4286%340000160000004.87805.7501%7.979863.6464%2.2179%
GPU7227449.662263.5135%500000180000005.94204.1968%55.604265.0448%1.5313%
Difference+1+49.6645+0.4865%-63000+148134150+32.7513+1.1705%+82.4158+0.8874%+0.4010%

Known prime factors:
No known factors for M77037767

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2014-11-13T20:08:00ANONYMOUS870000870000---3.557--1.745%
2022-10-22T09:27:49Krieselemu437000166134150---38.69--5.367%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-08-10T00:00:00ANONYMOUSv4_computers21253--1.55758e-5--
2003-12-02T00:00:00ANONYMOUSv4_computers21261--0.004--
2016-04-03T17:00:36Mark RoseManual testing261264--0.042--
2016-04-03T13:00:29Mark RoseManual testing264265--0.049--
2010-09-28T03:34:00ANONYMOUS265266--0.097--
2010-12-06T05:43:00arnaudSRV-240266267--0.194--
2010-12-11T19:16:00Klaas de Jongspc267268--0.388--
2010-12-13T17:13:00symalladold_laptop268269--0.776--
2010-12-17T23:34:00Loïc EvannoC8CDB759B269270--1.552--
2013-01-05T08:57:00ANONYMOUS270271--3.104--
2014-09-08T06:11:00ChuckManual testing271272--6.208--
2014-09-08T07:12:00ChuckManual testing272273--12.42--
2014-09-08T09:14:00ChuckManual testing273274--24.83--
2016-02-18T14:44:08dh1Manual testing274275--49.66--


ECM factoring results:
No ECM results for M77037767


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2016-06-21T20:38:56ANONYMOUSauspc-q6600FF25D4DF7F4515__217.2


PRP results:
No PRP results for M77037767


P-1 factor-bounds graph:
B1 = 437000, B2 = 166134150 (P-1 stage 2)
B1 = 870000 (P-1 stage 1)
B1 = 437000 (P-1 stage 1)
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TF factor-bounds graph:
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Last modified: 2022-10-22T09:27:49+00:00