is 21626301-1
has 489,566 decimal digits
takes 0.073 GHz-days to do one L-L test
Last-known PrimeNet details:
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2630.981466.6667%500,00015,000,0000.08357.2986%1.064973.9653%10.8074%
PrimeNet2570.011863.1579%7,000120,0000.00092.5562%0.012765.7141%2.5562%
GPU722610.188965.5738%6,50065,0000.00061.0900%0.189566.6637%1.0900%
Difference+2+0.7925+1.0929%+493,500+14,935,000+0.0829+6.2086%+0.8754+7.3015%+7.3015%

Known prime factors (3 factors, 224.5 bits, 0.01380687% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1626301145895072397771443.7304485488
24 × 7 × 29 × 1381
291,381-1.358e-66.649e-69.099e-6
1626301923597744932589031756.35828395658151
7 × 5237 × 774589
5,237774,5892015-03-270.00800.00310.0051
16263012911505536752767640908122904563934488938124.4538951312016510989173923286355244
22 × 3 × 7 × 101 × 373 × 4597 × 7069 × 44417 × 499691 × 3921877
499,6913,921,8772015-05-029.401e+100.04440.0659

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
1626301134748359863357186680096098463131100.088
162630142477431107105323852370912107022839860974492244975
3
51168.183
162630126890599481036034032588373499798718563998952795867
96767
55180.811
162630139232059581051885753506343552587033574173001092796
218993207237400959
68224.541
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2015-05-03T00:58:00alpertronManual testing500,00015,000,0001238124.4530.0840.1450.1677.299%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2015-03-27T12:43:00TJAOIManual testing25625756.358170.0020.1480.004


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,00025114.10


Lucas-Lehmer results:
Exponent "1626301" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-30T15:24:30alpertronManual testing
14589507239777
92359774493258903
29115055367527676409081229045639344889
21CFA7A167D574__no
2017-10-18T11:08:43Oliver KruseThreadripper
14589507239777
92359774493258903
29115055367527676409081229045639344889
21CFA7A167D574__no


P-1 factor-bounds graph:
B1 = 500,000, B2 = 15,000,000 (stage 2)
B1 = 500,000 (stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
263
257
240
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2019-10-07T13:17:29+00:00