is 2 1762333 - 1
has 530516 decimal digits
takes 0.096 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L22F3A4784A34210Bdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26716.860668.6567%2475400866600000.55557.9568%17.416171.1507%2.4939%
PrimeNet2570.010963.1579%80001400000.00122.8062%0.012164.1918%1.0339%
GPU722610.174365.5738%80001200000.00111.4530%0.175466.0740%0.5002%
Difference+6+16.6863+3.0829%+2467400+86540000+0.5544+6.5038%+17.2407+5.0767%+5.0767%

Known prime factors (1 factor, 103.5 bits, 0.00587120% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17623331404706089744866039867613277200132103.4703985359434751735454842000
24 × 33 × 53 × 472 × 193 × 1033 × 27283 × 6142261
2015-05-022728361422611.083e+110.02840.0492

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2011-02-07T12:42:00Carsten Kossendeyleela950001591250---0.014--2.422%
2014-04-08T23:01:00Jocelyn LaroucheManual testing100000100000---0.008--0.889%
2014-05-09T20:31:00Jocelyn LaroucheManual testing136420136420---0.011--1.059%
2014-09-17T22:20:00ANONYMOUSManual testing172840172840---0.014--1.202%
2015-05-02T02:39:00mikrMSI2475400866600001232103.4700.5560.1911.1117.957%
2016-03-16T12:30:24alpertronManual testing5000001500000012-
skipped known factor: 14047060897448660398676132772001
--0.101--5.046%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2003-01-25T00:00:00ANONYMOUSv4_computers21258--0.022--
2022-03-08T23:06:26LordJuliusManual testing258260--0.065--
2010-04-20T13:12:00Architects Cubedm1_f2260261--0.087--
2010-12-13T03:32:00GrunwalderGIMPManual testing21263--0.906--
2015-04-29T12:00:00snme2pm1Manual testing263264--1.114--
2015-04-29T12:00:00snme2pm1Manual testing264265--2.120--


ECM factoring results:

Old Calculation Method

Total ECM effort:17.677 GHz-days
Estimated T-Level:24.589
DigitsB1CurvesCompleteFacMiss
2011000257 / 1002.5707.555%
2550000257 / 2800.91839.872%

New Calculation Method

Total ECM effort:17.677 GHz-days
Estimated T-Level:24.589
DigitsB1CompleteFacMiss
20110008.2900.025%
25500000.74947.271%
302500000.04695.491%
3510000000.00299.789%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025717.68


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-01-10T00:00:00ANONYMOUSv4_computers22F3A4784A34210B0.096


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T09:38:50Oliver KruseGTX-0
14047060897448660398676132772001
9DB015FB589D8E__no
2017-11-04T01:44:32ATHec2-1xf
14047060897448660398676132772001
9DB015FB589D8E__no


P-1 factor-bounds graph:
B1 = 2475400, B2 = 86660000 (P-1 stage 2)
B1 = 2475400 (P-1 stage 1)
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
B1 = 95000, B2 = 1591250 (P-1 stage 2)
B1 = 172840 (P-1 stage 1)
B1 = 136420 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 95000 (P-1 stage 1)
103
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106
107
103
104
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108
TF factor-bounds graph:
267
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263
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2100
2110
Last modified: 2022-03-08T23:06:26+00:00