is 2 736063 - 1
has 221578 decimal digits
takes 0.015 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-LCC4388C1ACE5673Ddouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26880.978070.5882%750000011031768247501,740.803919.0163%1,821.781876.1813%
Target2440.000054.5455%1200036000000.006016.5948%0.006062.0886%
Difference+24+80.9780+16.0428%+7488000+1103173224750+1,740.7979+2.4214%+1,821.7758+14.0927%

Known prime factors:
No known factors for M736063

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-01-02ANONYMOUSv4_computers2000200000---0.000--0.159%
2002-02-03ANONYMOUSv4_computers4096409600---0.001--0.351%
2002-03-24ANONYMOUSv4_computers8192819200---0.002--0.650%
2002-05-11ANONYMOUSv4_computers163841638400---0.003--1.077%
2002-07-14ANONYMOUSv4_computers327683276800---0.006--1.642%
2002-11-24ANONYMOUSv4_computers655376553700---0.012--2.345%
2003-06-23ANONYMOUSv4_computers13107213107200---0.024--3.174%
2011-07-10Jocelyn LaroucheManual testing296578296578---0.009--1.202%
2011-08-24Jocelyn LaroucheManual testing494297494297---0.014--1.535%
2011-10-15Jocelyn LaroucheManual testing988594988594---0.029--2.067%
2012-03-29Jocelyn LaroucheManual testing14828911482891---0.043--2.420%
2013-10-29David Campeaui5-2500k148500049005000---0.118--5.797%
2015-11-24Sid & AndyBullseye736063022081890012---0.550--8.420%
2022-04-16lycornsupernova75000001103176824750---1,741--19.016%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2023-04-08masserManual testing700000033600000027--0.719
2023-04-11masserManual testing700000032200000017147--0.700
2023-05-05masserManual testing700000033600000065--0.719


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2000-05-31ANONYMOUSv4_computers21255--0.007--
2001-03-25ANONYMOUSv4_computers21256--0.013--
2001-12-01ANONYMOUSv4_computers21257--0.026--
2003-09-29ANONYMOUSv4_computers21258--0.052--
2008-10-11Sturle Sundemorovan.ifi258259--0.052--
2008-10-11Sturle Sundemorovan.ifi259260--0.104--
2010-07-03Architects Cubedi4l_1260261--0.209--
2015-03-03NRManual testing261262--0.417--
2015-10-17Gordon SpenceManual testing262263--1.334--
2015-10-17Gordon SpenceManual testing263264--2.667--
2016-04-16lycornManual testing264265--5.076--
2017-09-09Smok_bmvManual testing265266--10.15--
2020-05-10Gordon SpenceManual testing266267--20.30--
2022-03-26Gordon SpenceManual testing267268--40.61--


ECM factoring results:
Total ECM effort:39.554 GHz-days
Estimated T-Level:26.653
DigitsB1CompleteFacMiss
201100025.2650.000%
25500003.3653.456%
302500000.33171.845%
3510000000.02697.426%
4030000000.00299.829%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002806.344
25000025000000768.610
2500002750000070.821
2500004759965071.047
2500002378239505022.73


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1997-01-01Roger GariépyCC4388C1ACE5673D0.015
2015-04-11MadPooManual testingCC4388C1ACE5673D0.015


PRP results:
No PRP results for M736063


P-1 factor-bounds graph:
B1 = 7500000, B2 = 1103176824750 (P-1 stage 2)
B1 = 7360630, B2 = 220818900 (P-1 stage 2)
B1 = 7500000 (P-1 stage 1)
B1 = 7360630 (P-1 stage 1)
B1 = 1485000, B2 = 49005000 (P-1 stage 2)
B1 = 1485000 (P-1 stage 1)
B1 = 1482891 (P-1 stage 1)
B1 = 988594 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 494297 (P-1 stage 1)
B1 = 65537, B2 = 6553700 (P-1 stage 2)
B1 = 296578 (P-1 stage 1)
B1 = 32768, B2 = 3276800 (P-1 stage 2)
B1 = 131072 (P-1 stage 1)
B1 = 16384, B2 = 1638400 (P-1 stage 2)
B1 = 65537 (P-1 stage 1)
B1 = 8192, B2 = 819200 (P-1 stage 2)
B1 = 32768 (P-1 stage 1)
B1 = 4096, B2 = 409600 (P-1 stage 2)
B1 = 16384 (P-1 stage 1)
B1 = 2000, B2 = 200000 (P-1 stage 2)
B1 = 8192 (P-1 stage 1)
B1 = 4096 (P-1 stage 1)
B1 = 2000 (P-1 stage 1)
102
103
104
105
106
107
102
103
104
105
106
107
108
109
1010
1011
1012
1013
TF factor-bounds graph:
268
267
266
265
264
263
262
261
260
259
258
257
256
255
this exponent TF target: 44
TF double-checked to: 67.8
ECM T-Level=26.65 ~= 72-bit
250
260
270
280
Last modified: 2023-06-05T21:50:05+00:00