is 2 1779779 - 1
has 535767 decimal digits
takes 0.097 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual26716.695368.6567%500000150000000.10155.0516%16.796870.2401%1.5833%
PrimeNet2570.010863.1579%80001400000.00122.8114%0.012064.1937%1.0358%
GPU722610.172665.5738%80001300000.00121.4916%0.173766.0873%0.5135%
Difference+6+16.5227+3.0829%+492000+14870000+0.1003+3.5600%+16.6230+4.1528%+4.1528%

Known prime factors (4 factors, 164.2 bits, 0.00922828% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
17797793559559721.7631
1
-111.570e-137.866e-81.601e-7
17797791880194131191237.45252821
32 × 5869
2008-07-15958691.474e-82.582e-54.695e-5
17797795727649182231239.059160909
7 × 127 × 181
2008-07-151271817.525e-81.022e-52.033e-5
1779779721937708756716645372065.96920281667239492
22 × 5070416809873
2018-11-28450704168098738.127021,73140,587

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
17797796692661941424545211859.215
177977920387905195449436571960.822
17797791076909237794404883675372476.511
17797792569779868644349545476591832787.732
17797793833321969574214053330616361833098.275
17797791357383043089134108118458486090332103.421
17797794135005927181408003873309415775132105.028
17797794831685027475315116760031970289102177738125.184
177977914718797563151925492859273390706999180939126.791
1779779777461387672234782736348915182331062493536943142.480
17797792767419679641192371002215408177503174478431714227150164.243
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:33:08alpertronManual testing5000001500000012-
skipped known factor: 3559559
skipped known factor: 188019413119
skipped known factor: 572764918223
--0.101--5.052%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:46:00J FeitsmaManual testing??37.452124.45567e-90.2079.55002e-9
2008-07-15T07:46:00J FeitsmaManual testing??39.059123.41044e-80.2077.30975e-8


ECM factoring results:

Old Calculation Method

Total ECM effort:17.765 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:17.765 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110008.3230.024%
25500000.75247.133%
302500000.04695.474%
3510000000.00299.788%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025517.56
50000500000030.207


Lucas-Lehmer results:
No L-L results for M1779779


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T13:45:09Oliver KruseGTX-0
3559559
188019413119
572764918223
34145716CF2F0E__no
2017-11-04T16:46:24ATHec2-1xf
3559559
188019413119
572764918223
34145716CF2F0E__no
2018-11-28T05:26:17rucio
3559559
188019413119
572764918223
72193770875671664537
BA07D013A8D4C2__no
2018-11-28T05:37:01ATHec2-PRPCFDC
3559559
188019413119
572764918223
72193770875671664537
BA07D013A8D4C2__no


P-1 factor-bounds graph:
B1 = 500000, B2 = 15000000 (P-1 stage 2)
B1 = 500000 (P-1 stage 1)
100
101
102
103
104
105
106
100
101
102
103
104
105
106
107
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109
1010
1011
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1013
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2020-10-23T07:52:13+00:00