is 2 14683 - 1
has 4421 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L40CADF1BC8AC4085double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2672,023.695379.1045%740000000032522539163164050612,347.626236.6281%614,371.321586.7581%
Target2440.000268.1818%500500000.00001.4209%0.000268.6339%
Difference+23+2,023.6951+10.9227%+7399999500+32522539163114050+612,347.6262+35.2072%+614,371.3213+18.1242%

Known prime factors (3 factors, 404.4 bits, 2.75439191% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14683119439537202751774912659267966427934109.88040672729415906754380119617233
97 × 677 × 1259 × 1668553 × 294833737768991
2008-04-2416685532948337377689911.237e+135,551.210,368
14683413507101892042463735688749183906371314340131.603140811517364313309179217036431215137
3 × 11 × 47 × 15497 × 308638171 × 1476823577 × 12852881213
2017-07-041476823577128528812131.277e+130.72461.0387
146831124958325200225607625937822452217212426119236396150162.944383081906013834232658836008462922159104447060
22 × 3 × 5 × 72 × 19 × 37 × 89 × 1132 × 6719 × 1986713 × 3183800447 × 3837571467557
2023-05-26318380044738375714675579.936e+1273.295134.95

4 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2001-04-29ANONYMOUSv4_computers10000010000000---0.000--1.739%
2001-07-17Alex Kruppav4_computers1000000100000000---0.002--4.372%
2001-10-06ANONYMOUSv4_computers430000004290000000---0.095--10.739%
2002-04-28ANONYMOUSv4_computers163841638400---3.62019e-5--0.559%
2002-06-09ANONYMOUSv4_computers327683276800---7.24038e-5--0.916%
2002-07-14ANONYMOUSv4_computers655366553600---0.000--1.390%
2003-02-02ANONYMOUSv4_computers13107213107200---0.000--1.986%
2003-03-27ANONYMOUSv4_computers26214426214400---0.001--2.698%
2003-04-03ANONYMOUSv4_computers52428852428800---0.001--3.519%
2003-04-27ANONYMOUSv4_computers1048576104857600---0.002--4.438%
2003-05-19ANONYMOUSv4_computers2097152209715200---0.005--5.450%
2003-07-06ANONYMOUSv4_computers4194304419430400---0.009--6.547%
2003-09-29ANONYMOUSv4_computers8388608838860800---0.019--7.724%
2003-09-29ANONYMOUSv4_computers167772161677721600---0.037--8.971%
2021-08-01ViliamF325000000042750000000---0.887--14.963%
2023-05-26JacobZGreatLakes74000000003252253916316405050162.944612,3486.99890e-61,224,69536.628%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
1999-09-14ANONYMOUSv4_computers252253--0.041--
2000-03-01ANONYMOUSv4_computers253254--0.082--
2000-09-15ANONYMOUSv4_computers21256--0.654--
2002-08-31ANONYMOUSv4_computers21257--1.308--


ECM factoring results:
Total ECM effort:476.002 GHz-days
Estimated T-Level:38.783
DigitsB1CompleteFacMiss
2011000698.5290.000%
2550000172.3800.000%
3025000035.4300.000%
3510000005.7050.333%
4030000000.75746.930%
45110000000.08691.770%
50440000000.00999.152%


ECM Summary

B1B2factorcurvesGHz-days
500005000000470.012
2500002500000060.007
3500003500000030.005
9500009500000010.005
10000001000000001200.597
10000001000000004282.128
30000003000000001,02215.25
3000000229728749251,200458.0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1997-01-01George Woltman40CADF1BC8AC40853.49945e-6


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21Oliver KruseOliver-PC
1194395372027517749126592679664279
4135071018920424637356887491839063713143
0CA6958417C6E08Bno
2017-09-21Oliver KruseManual testing
1194395372027517749126592679664279
4135071018920424637356887491839063713143
0CA6958417C6E08Bno
2017-10-02kkmrkkblmbrbkManual testing
1194395372027517749126592679664279
4135071018920424637356887491839063713143
0CA6958417C6E0__no
2017-12-07ATHManual testing
1194395372027517749126592679664279
4135071018920424637356887491839063713143
0CA6958417C6E0__no
2020-04-17Oliver KruseManual testing
1194395372027517749126592679664279
4135071018920424637356887491839063713143
332014D6BBC811__no
2023-05-26JacobZGreatLakes
1194395372027517749126592679664279
4135071018920424637356887491839063713143
11249583252002256076259378224522172124261192363961
332014D6BBC81110no


P-1 factor-bounds graph:
B1 = 7400000000, B2 = 32522539163164050 (P-1 stage 2)
B1 = 7400000000 (P-1 stage 1)
B1 = 250000000, B2 = 42750000000 (P-1 stage 2)
B1 = 43000000, B2 = 4290000000 (P-1 stage 2)
B1 = 250000000 (P-1 stage 1)
B1 = 16777216, B2 = 1677721600 (P-1 stage 2)
B1 = 8388608, B2 = 838860800 (P-1 stage 2)
B1 = 43000000 (P-1 stage 1)
B1 = 4194304, B2 = 419430400 (P-1 stage 2)
B1 = 16777216 (P-1 stage 1)
B1 = 2097152, B2 = 209715200 (P-1 stage 2)
B1 = 8388608 (P-1 stage 1)
B1 = 1048576, B2 = 104857600 (P-1 stage 2)
B1 = 1000000, B2 = 100000000 (P-1 stage 2)
B1 = 4194304 (P-1 stage 1)
B1 = 524288, B2 = 52428800 (P-1 stage 2)
B1 = 2097152 (P-1 stage 1)
B1 = 262144, B2 = 26214400 (P-1 stage 2)
B1 = 1048576 (P-1 stage 1)
B1 = 1000000 (P-1 stage 1)
B1 = 131072, B2 = 13107200 (P-1 stage 2)
B1 = 100000, B2 = 10000000 (P-1 stage 2)
B1 = 524288 (P-1 stage 1)
B1 = 65536, B2 = 6553600 (P-1 stage 2)
B1 = 262144 (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 = 100000 (P-1 stage 1)
B1 = 65536 (P-1 stage 1)
B1 = 32768 (P-1 stage 1)
B1 = 16384 (P-1 stage 1)
103
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108
109
1010
103
104
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107
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109
1010
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1013
1014
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1016
1017
TF factor-bounds graph:
257
256
254
253
this exponent TF target: 44
TF double-checked to: 67.9
ECM T-Level=38.78 ~= 112-bit
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Last modified: 2023-09-25T11:53:03+00:00