is 2 72162049 - 1
has 21722942 decimal digits
takes 192.933 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
Actual275106.037864.0000%6150006150002.38421.4886%108.422064.5359%0.5359%
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%+115000-16385000-3.0392-2.6301%+49.9809-0.4804%-0.4804%

Known prime factors (1 factor, 77.1 bits, 0.00010686% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
721620491635178813129400807650492477.1141132990841993276
22 × 7 × 23 × 1213 × 5507 × 263369
2015-08-075507263369660.660.07580.1039

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-08-07T04:23:00Jwb52zClay6150006150002477.1142.384385.94.7681.489%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-19T10:45:00Wojciech FlorekManual testing21264--0.049--
2010-05-13T20:59:00ANONYMOUSv4_computers21270--3.311--
2010-07-20T00:00:00ANONYMOUSv4_computers21270--3.311--
2013-04-15T04:51:00PEDManual testing270271--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--
2015-08-06T12:45:00ChuckManual testing274275--53.02--


ECM factoring results:
No ECM results for M72162049


Lucas-Lehmer results:
No L-L results for M72162049


PRP results:
No PRP results for M72162049


P-1 factor-bounds graph:
B1 = 615000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
TF factor-bounds graph:
275
274
273
272
271
270
264
250
260
270
280
290
2100
Last modified: 2015-08-07T04:23:00+00:00