is 2 3288983 - 1
has 990083 decimal digits
takes 0.345 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP1BFCF8292AA049F0verified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26818.122667.6471%10000001343160001.25847.6523%19.381070.1228%2.4757%
PrimeNet2600.046763.3333%140002600000.00422.7768%0.050964.3515%1.0182%
GPU722641.082265.6250%170002800000.00481.6882%1.087066.2053%0.5803%
Difference+4+17.0404+2.0221%+983000+134036000+1.2537+5.9641%+18.2941+3.9175%+3.9175%

Known prime factors (1 factor, 80.1 bits, 0.00243598% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
328898313128435822362547940709512580.119199581995747052325
52 × 11 × 12143 × 59767167241
2021-02-221214359767167241123,198495.90926.20

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-12-13T00:00:00Team Prime Ribv4_computers20000260000---0.005--0.959%
2011-09-25T16:48:00harleeP4_2600600001065000---0.017--1.939%
2014-06-26T21:22:00ANONYMOUSManual testing7951579515---0.012--0.754%
2014-10-10T20:28:00Jocelyn LaroucheManual testing9903099030---0.015--0.861%
2016-01-28T01:44:16Jocelyn LaroucheManual testing38340038340006---0.087--3.600%
2022-04-02T19:48:39Jocelyn LaroucheManual testing1000000134316000---1.258--7.652%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-08-24T00:00:00ANONYMOUSv4_computers21260--0.047--
2009-04-01T04:45:00S485122USB-A260261--0.047--
2011-10-04T03:55:00Grant McCrackenthumper261262--0.093--
2012-12-30T00:06:00dbaughManual testing262263--0.298--
2015-02-07T18:05:00VictordeHollanderManual testing263264--0.597--
2015-02-07T18:05:00VictordeHollanderManual testing264265--1.136--
2015-06-29T20:47:00ThaManual testing265266--2.272--
2017-04-07T14:00:46Gordon SpenceManual testing266267--4.544--
2018-11-19T15:52:50TJAOIManual testing267268--9.088--


ECM factoring results:

Old Calculation Method

Total ECM effort:3.933 GHz-days
Estimated T-Level:1.350
DigitsB1CurvesCompleteFacMiss
201100027 / 1000.27076.234%
255000027 / 2800.09690.792%

New Calculation Method

Total ECM effort:3.933 GHz-days
Estimated T-Level:1.350
DigitsB1CompleteFacMiss
20110001.03835.400%
25500000.09690.839%
302500000.00699.396%


ECM Summary

B1B2factorcurvesGHz-days
500005000000223.205
50000500000050.728


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-07-04T00:00:00curtiscv4_computers981912D6DFC272__0.345


PRP results:
dateuseridcompidcofactorsres64PRP
2021-02-23T16:43:12yoyorocks1
1312843582236254794070951
1BFCF8292AA049F0no


P-1 factor-bounds graph:
B1 = 1000000, B2 = 134316000 (P-1 stage 2)
B1 = 1000000 (P-1 stage 1)
B1 = 383400, B2 = 3834000 (P-1 stage 2)
B1 = 383400 (P-1 stage 1)
B1 = 60000, B2 = 1065000 (P-1 stage 2)
B1 = 99030 (P-1 stage 1)
B1 = 79515 (P-1 stage 1)
B1 = 60000 (P-1 stage 1)
B1 = 20000, B2 = 260000 (P-1 stage 2)
B1 = 20000 (P-1 stage 1)
103
104
105
106
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
250
260
270
280
290
2100
Last modified: 2022-04-02T19:48:39+00:00