is 21107383-1
has 333,356 decimal digits
takes 0.033 GHz-days to do one L-L test
Last-known PrimeNet details:
0 L-L tests remaining
ResidueStatus
L-LE7B805BFDD5773FBdouble-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2631.441366.6667%500,00010,000,0000.04376.4894%1.485073.1561%10.6561%
PrimeNet2560.008762.5000%4,50065,0000.00032.0305%0.009064.5305%2.0305%
GPU722600.138765.0000%4,50022,0000.00020.6849%0.138965.6849%0.6849%
Difference+3+1.3026+1.6667%+495,500+9,978,000+0.0435+5.8046%+1.3461+7.4712%+7.4712%

Known prime factors (1 factor, 120.2 bits, 0.01085759% known):
Remaining cofactor is not a probable-prime

GHz-days
exponentfactordigitsbits*kmin B1min B2date foundmin. TFmin. P-1normal P-1
1107383156447484019393578713054696165482035337120.235706383807677170313762513494272
28 × 3 × 11 × 19 × 349 × 58271 × 416761 × 423299 × 1226651
423,2991,226,6512012-09-271.341e+110.02010.0370

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2002-03-03T00:00:00Jocelyn Larouchev4_computers15,000165,000---0.001--1.306%
2012-09-27T02:38:00kurlysmile500,00010,000,00037120.2350.0440.0660.0876.489%
2016-03-17T18:59:56alpertronManual testing300,00010,000,00012---0.036--6.150%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-12-01T00:00:00ANONYMOUSv4_computers?257--0.017--
2009-02-16T20:58:00Sturle Sundegopher.ifi260261--0.139--
2011-05-09T14:44:00XyzzyManual testing261262--0.277--


ECM factoring results:
ECM Summary

B1B2factorcurvesGHz-days
50,0005,000,0002819.90
250,00025,000,000447.751


Lucas-Lehmer results:
Exponent "1107383" not found


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-29T02:29:30Oliver KruseGTX-3
1564474840193935787130546961654820353
878206613510D6__no
2017-10-16T14:59:54Oliver KruseThreadripper
1564474840193935787130546961654820353
878206613510D6__no
2018-01-02T04:10:07ATHec2-1xf
1564474840193935787130546961654820353
878206613510D6__no


P-1 factor-bounds graph:
B1 = 500,000, B2 = 10,000,000 (stage 2)
B1 = 300,000, B2 = 10,000,000 (stage 2)
B1 = 500,000 (stage 1)
B1 = 300,000 (stage 1)
B1 = 15,000, B2 = 165,000 (stage 2)
B1 = 15,000 (stage 1)
103
104
105
106
103
104
105
106
107
TF factor-bounds graph:
263
262
261
257
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2020-08-07T11:05:17+00:00