is 2 2263069 - 1
has 681252 decimal digits
takes 0.149 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L76F32FCB256CD809double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26713.129967.1642%34214434214400.04863.6562%13.178568.3647%1.2005%
PrimeNet2580.017062.0690%100001900000.00192.9193%0.018963.1763%1.1073%
GPU722620.271564.5161%120001900000.00211.7067%0.273565.1217%0.6056%
Difference+5+12.8584+2.6481%+330144+3231440+0.0465+1.9495%+12.9050+3.2430%+3.2430%

Known prime factors (1 factor, 72.3 bits, 0.00319613% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
226306959389900795371866220792272.3311312153999621131
3 × 6971 × 62743460987
2017-12-22697162743460987427.25325.91608.70

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2010-11-07T01:16:00Jocelyn LaroucheManual testing1500015000---0.001--0.240%
2010-11-12T11:44:00Jocelyn LaroucheManual testing3000030000---0.003--0.422%
2011-01-04T09:59:00markrtiny1000002100000---0.020--2.716%
2014-09-02T00:10:00Jocelyn LaroucheManual testing128362128362---0.012--1.071%
2016-03-29T23:26:44Jocelyn LaroucheManual testing34214434214406---0.049--3.656%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2016-02-23T16:29:10Mark RoseManual testing21260--0.068--
2009-01-11T10:34:00Sturle Sundegooch.ifi260261--0.068--
2012-05-05T15:48:00Sebastian HornbostelManual testing261262--0.136--
2013-12-06T02:47:00Jerry HallettManual testing262263--0.434--
2015-03-10T10:44:00VictordeHollanderManual testing263264--0.868--
2015-03-10T10:44:00VictordeHollanderManual testing264265--1.651--
2015-10-30T09:42:37ramgeisManual testing265266--3.302--
2017-01-16T00:47:36Gordon SpenceManual testing266267--6.604--


ECM factoring results:

Old Calculation Method

Total ECM effort:2.750 GHz-days
Estimated T-Level:1.600
DigitsB1CurvesCompleteFacMiss
201100032 / 1000.32072.498%
255000032 / 2800.11489.182%

New Calculation Method

Total ECM effort:2.750 GHz-days
Estimated T-Level:1.600
DigitsB1CompleteFacMiss
20110001.03235.620%
25500000.09391.093%
302500000.00699.427%


ECM Summary

B1B2factorcurvesGHz-days
500005000000302.578
50000500000020.172


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-03-01T00:00:00ANONYMOUSv4_computers76F32FCB256CD8090.149


PRP results:
dateuseridcompidcofactorsres64PRP
2017-12-22T08:17:30ATHec2-1xd
5938990079537186622079
5A0D23954A6C24__no
2017-12-23T09:03:55storm5510Athlon2x4
5938990079537186622079
5A0D23954A6C24__no


P-1 factor-bounds graph:
B1 = 342144, B2 = 3421440 (P-1 stage 2)
B1 = 342144 (P-1 stage 1)
B1 = 100000, B2 = 2100000 (P-1 stage 2)
B1 = 128362 (P-1 stage 1)
B1 = 100000 (P-1 stage 1)
B1 = 30000 (P-1 stage 1)
B1 = 15000 (P-1 stage 1)
102
103
104
105
106
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
266
265
264
263
262
261
260
250
260
270
280
290
2100
Last modified: 2017-12-23T09:03:55+00:00