is 2 3066097 - 1
has 922988 decimal digits
takes 0.261 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LD579AD49E5DD4238double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26819.440067.6471%30000001000000001.02248.0392%20.462470.2480%2.6009%
PrimeNet2600.050163.3333%120002200000.00292.5252%0.053064.2593%0.9259%
GPU722641.160965.6250%140002200000.00311.4665%1.164066.1291%0.5041%
Difference+4+18.2791+2.0221%+2986000+99780000+1.0193+6.5727%+19.2984+4.1189%+4.1189%

Known prime factors (1 factor, 89.3 bits, 0.00291276% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
30660977662534942002858214766551432789.308124955846830724178243
3 × 13 × 19 × 75773 × 272603 × 8163817
2017-12-15272603816381765,874,8910.08670.1025

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-02-14T00:00:00ANONYMOUSv4_computers2048204800---0.002--0.249%
2010-09-24T03:21:00markrtiny1100002447500---0.029--2.667%
2016-03-28T15:15:48Squeeky_SquirrelP4_2600205000599625012---0.064--3.614%
2017-12-15T14:43:16mikrMSI3000000100000000122789.3081.0220.5222.0458.039%
2020-06-03T10:07:18Jocelyn LaroucheManual testing30660930660976---0.056--3.295%
2022-01-06T11:35:13Jocelyn LaroucheManual testing1209912116447100-
skipped known factor: 766253494200285821476655143
--0.924--7.593%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-06-17T00:00:00ANONYMOUSv4_computers21260--0.050--
2009-02-14T05:48:00Sturle Sundescarpia.ifi260261--0.050--
2011-10-14T19:02:00Sid & AndyBuzz261262--0.100--
2013-01-07T13:56:00dbaughManual testing262263--0.320--
2015-02-07T18:28:00VictordeHollanderManual testing263264--0.640--
2015-02-07T18:28:00VictordeHollanderManual testing264265--1.219--
2015-06-06T19:31:00ThaManual testing265266--2.437--
2017-05-09T09:30:27Gordon SpenceManual testing266267--4.874--
2021-04-10T18:29:54Jocelyn LaroucheManual testing267268--9.75--


ECM factoring results:

Old Calculation Method

Total ECM effort:1.749 GHz-days
Estimated T-Level:0.750
DigitsB1CurvesCompleteFacMiss
201100015 / 1000.15086.006%
255000015 / 2800.05494.775%

New Calculation Method

Total ECM effort:1.749 GHz-days
Estimated T-Level:0.750
DigitsB1CompleteFacMiss
20110000.48461.639%
25500000.04495.721%
302500000.00399.731%


ECM Summary

B1B2factorcurvesGHz-days
500005000000151.749


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-07-26T00:00:00ANONYMOUSv4_computersD579AD49E5DD42380.261


PRP results:
dateuseridcompidcofactorsres64PRP
2017-12-17T18:00:10Oliver KruseGTX-3
766253494200285821476655143
4CE560C8AB90B3__no
2017-12-18T01:20:09kkmrkkblmbrbkc4.xlarge
766253494200285821476655143
4CE560C8AB90B3__no


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 1209912, B2 = 116447100 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 1209912 (P-1 stage 1)
B1 = 205000, B2 = 5996250 (P-1 stage 2)
B1 = 306609, B2 = 3066097 (P-1 stage 2)
B1 = 306609 (P-1 stage 1)
B1 = 110000, B2 = 2447500 (P-1 stage 2)
B1 = 205000 (P-1 stage 1)
B1 = 110000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 2048 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
250
260
270
280
290
2100
Last modified: 2022-01-06T11:35:13+00:00