is 2 72162037 - 1
has 21722938 decimal digits
takes 192.933 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
1 primality tests remaining
ResidueStatus
L-LF1640D501FE562__
needs double-check
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual275106.037964.0000%665000139650005.38723.7300%111.425165.3428%1.3428%
PrimeNet2703.311361.4286%300000140000004.05675.4869%7.368063.5449%2.1164%
GPU7227453.017763.5135%500000170000005.42344.1187%58.441165.0163%1.5028%
Difference+1+53.0202+0.4865%+165000-3035000-0.0362-0.3887%+52.9839+0.3265%+0.3265%

Known prime factors:
No known factors for M72162037

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-02-17T14:51:00apocalypsecapn-slick66500013965000---5.387--3.730%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-19T10:45:00Wojciech FlorekManual testing21264--0.049--
2010-05-08T14:58:00w00dyi5264265--0.052--
2010-05-10T12:01:00w00dyi5265266--0.104--
2010-07-19T07:40:00TRUSTNO1dimension266267--0.207--
2010-07-20T09:54:00TeraTismS267268--0.414--
2010-09-22T20:28:00Allan MananganKuro268269--0.828--
2012-09-29T16:25:00Bold_SeekerManual testing269270--1.657--
2012-12-02T21:24:00ANONYMOUS270271--3.314--
2014-08-20T21:39:00Jerry HallettManual testing271272--6.628--
2014-08-20T21:39:00Jerry HallettManual testing272273--13.26--
2014-08-20T21:39:00Jerry HallettManual testing273274--26.51--
2016-06-18T20:37:35ANONYMOUSManual testing274275--53.02--


ECM factoring results:
No ECM results for M72162037


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
2017-01-17T19:12:19Chun sung sooye-in_SeoF1640D501FE562__192.9


PRP results:
No PRP results for M72162037


P-1 factor-bounds graph:
B1 = 665000, B2 = 13965000 (P-1 stage 2)
B1 = 665000 (P-1 stage 1)
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108
TF factor-bounds graph:
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Last modified: 2017-01-17T19:12:19+00:00