is 2 3063253 - 1
has 922132 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-L-unknown--unknown-
PRP22B130CB6529BF7Averified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26938.973968.1159%30000001000000001.02247.4092%39.996370.4783%2.3624%
PrimeNet2600.050163.3333%120002200000.00292.5248%0.053064.2591%0.9258%
GPU722641.161965.6250%140002200000.00311.4662%1.165166.1290%0.5040%
Difference+5+37.8119+2.4909%+2986000+99780000+1.0193+5.9431%+38.8312+4.3493%+4.3493%

Known prime factors (1 factor, 76.5 bits, 0.00249739% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
30632531069463248788197586020872476.50117456332349763431
71 × 89 × 20857 × 132450257
2021-06-23208571324502576,046.00.89301.6633

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2004-02-07T00:00:00ANONYMOUSv4_computers2048204800---0.002--0.201%
2010-09-25T00:34:00markrtiny1100002447500---0.029--2.371%
2016-03-27T17:15:11Squeeky_SquirrelP4_2600205000599625012---0.064--3.244%
2017-12-02T09:12:32mikrMSI300000010000000012---1.022--7.409%
2022-02-11T03:00:41Jocelyn LaroucheManual testing1000000119912100---0.923--6.850%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-06-17T00:00:00ANONYMOUSv4_computers21260--0.050--
2009-02-13T01:10:00Sturle Sundescarpia.ifi260261--0.050--
2011-10-10T18:43:00Sid & AndyBuzz261262--0.100--
2013-01-07T13:56:00dbaughManual testing262263--0.320--
2015-02-07T18:28:00VictordeHollanderManual testing263264--0.641--
2015-02-07T18:28:00VictordeHollanderManual testing264265--1.220--
2015-06-06T19:31:00ThaManual testing265266--2.439--
2017-05-09T09:30:26Gordon SpenceManual testing266267--4.879--
2022-01-20T22:38:01Jocelyn LaroucheManual testing267268--9.76--
2018-08-01T11:29:09ramgeisManual testing267268--9.76--
2021-04-06T16:36:30TJAOIManual testing268269--19.52--


ECM factoring results:

Old Calculation Method

Total ECM effort:7.795 GHz-days
Estimated T-Level:3.350
DigitsB1CurvesCompleteFacMiss
201100067 / 1000.67050.999%
255000067 / 2800.23978.685%

New Calculation Method

Total ECM effort:7.795 GHz-days
Estimated T-Level:3.350
DigitsB1CompleteFacMiss
20110002.16111.518%
25500000.19582.275%
302500000.01298.806%


ECM Summary

B1B2factorcurvesGHz-days
50000480000070.801
500005000000576.644
50000500000030.350


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-15T00:00:00Stephen Woodv4_computers2E87A28E70FF07__0.261


PRP results:
dateuseridcompidcofactorsres64PRP
2021-06-24T03:05:17kutenssol
106946324878819758602087
22B130CB6529BF7Ano


P-1 factor-bounds graph:
B1 = 3000000, B2 = 100000000 (P-1 stage 2)
B1 = 1000000, B2 = 119912100 (P-1 stage 2)
B1 = 3000000 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 205000, B2 = 5996250 (P-1 stage 2)
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:
269
268
267
266
265
264
263
262
261
260
250
260
270
280
290
2100
Last modified: 2022-02-11T03:00:41+00:00