is 2 2950093 - 1
has 888067 decimal digits
takes 0.251 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L5AEDB3E2BE5E5A11double-checked
PRP6B8C3C56B030A18Everified PRP

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26940.468868.1159%1045446220000000.26995.1708%40.738769.7646%1.6487%
PrimeNet2600.052163.3333%120002200000.00292.5073%0.054964.2527%0.9194%
GPU722641.206565.6250%120002000000.00271.3466%1.209366.0879%0.4629%
Difference+5+39.2623+2.4909%+1033446+21800000+0.2672+3.8241%+39.5295+3.6767%+3.6767%

Known prime factors (1 factor, 86.3 bits, 0.00292523% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2950093950529788913027222848001672686.29716110166508530870431
3 × 5370055502843623477
2021-08-02353700555028436234779,165,2623.611e+106.744e+10

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2003-12-13T00:00:00ANONYMOUSv4_computers2048204800---0.002--0.199%
2003-12-23T00:00:00Team Prime Ribv4_computers1000010000---0.001--0.120%
2010-11-03T12:44:00markrtiny950001971250---0.024--2.172%
2014-11-10T23:29:00Jocelyn LaroucheManual testing116757116757---0.014--0.806%
2015-01-26T12:23:00Jocelyn LaroucheManual testing141275141275---0.017--0.900%
2015-02-01T13:32:00Jocelyn LaroucheManual testing188036188036---0.023--1.053%
2015-02-02T07:32:00Jocelyn LaroucheManual testing206839206839---0.026--1.107%
2015-02-11T12:22:00Jocelyn LaroucheManual testing366425366425---0.045--1.470%
2015-02-15T21:12:00Jocelyn LaroucheManual testing403067403067---0.050--1.537%
2015-02-23T15:50:00Jocelyn LaroucheManual testing443373443373---0.055--1.605%
2015-02-27T19:06:00Jocelyn LaroucheManual testing487710487710---0.060--1.675%
2015-03-10T07:55:00Jocelyn LaroucheManual testing536481536481---0.066--1.747%
2015-03-14T11:30:00Jocelyn LaroucheManual testing590129590129---0.073--1.821%
2015-03-29T20:50:00Jocelyn LaroucheManual testing714055714055---0.088--1.973%
2015-04-08T16:59:00Jocelyn LaroucheManual testing785460785460---0.097--2.052%
2015-05-01T17:21:00Jocelyn LaroucheManual testing950406950406---0.117--2.215%
2015-05-02T08:23:00VictordeHollanderManual testing100000020000000---0.251--5.056%
2016-09-08T02:10:15Jocelyn Larouchelow4M10454462200000012---0.270--5.171%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-05-09T00:00:00ANONYMOUSv4_computers21260--0.052--
2009-02-14T18:59:00Sturle Sundebach.ifi260261--0.052--
2011-11-24T05:58:00markrManual testing261262--0.104--
2013-01-07T13:49:00dbaughManual testing262263--0.333--
2015-04-27T09:54:00VictordeHollanderManual testing263264--0.666--
2015-04-27T09:54:00VictordeHollanderManual testing264265--1.267--
2016-02-25T09:22:06ramgeisManual testing265266--2.533--
2017-11-28T10:01:36Gordon SpenceManual testing266267--5.066--
2018-12-24T00:53:32chuenkitManual testing267268--10.13--
2021-05-19T10:49:17TJAOIManual testing268269--20.26--


ECM factoring results:

Old Calculation Method

Total ECM effort:10.172 GHz-days
Estimated T-Level:4.300
DigitsB1CurvesCompleteFacMiss
201100086 / 1000.86042.133%
255000086 / 2800.30773.514%

New Calculation Method

Total ECM effort:10.172 GHz-days
Estimated T-Level:4.300
DigitsB1CompleteFacMiss
20110003.3463.522%
25500000.30973.381%
302500000.02098.064%


ECM Summary

B1B2factorcurvesGHz-days
500005000000748.569
50000675000070.935
50000675000050.668


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1999-06-06T00:00:00ANONYMOUSv4_computers5AEDB3E2BE5E5A110.251
2018-10-12T14:52:49kkmrkkblmbrbkold5AEDB3E2BE5E5A110.251


PRP results:
dateuseridcompidcofactorsres64PRP
2021-08-04T04:02:35kutensryzen2
95052978891302722284800167
6B8C3C56B030A18Eno


P-1 factor-bounds graph:
B1 = 1045446, B2 = 22000000 (P-1 stage 2)
B1 = 1000000, B2 = 20000000 (P-1 stage 2)
B1 = 1045446 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 950406 (P-1 stage 1)
B1 = 785460 (P-1 stage 1)
B1 = 714055 (P-1 stage 1)
B1 = 590129 (P-1 stage 1)
B1 = 536481 (P-1 stage 1)
B1 = 487710 (P-1 stage 1)
B1 = 443373 (P-1 stage 1)
B1 = 403067 (P-1 stage 1)
B1 = 366425 (P-1 stage 1)
B1 = 206839 (P-1 stage 1)
B1 = 95000, B2 = 1971250 (P-1 stage 2)
B1 = 188036 (P-1 stage 1)
B1 = 141275 (P-1 stage 1)
B1 = 116757 (P-1 stage 1)
B1 = 95000 (P-1 stage 1)
B1 = 2048, B2 = 204800 (P-1 stage 2)
B1 = 10000 (P-1 stage 1)
B1 = 2048 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
TF factor-bounds graph:
269
268
267
266
265
264
263
262
261
260
250
260
270
280
290
2100
Last modified: 2021-08-04T04:02:35+00:00