is 2 1595813 - 1
has 480388 decimal digits
takes 0.071 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
Actual26718.619968.6567%500000150000000.08354.9855%18.703570.2194%1.5626%
PrimeNet2570.012063.1579%70001200000.00092.5468%0.012964.0962%0.9383%
GPU722610.192565.5738%6500600000.00061.0557%0.193165.9372%0.3634%
Difference+6+18.4274+3.0829%+493500+14940000+0.0829+3.9298%+18.5104+4.2821%+4.2821%

Known prime factors (4 factors, 168.4 bits, 0.01054990% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
159581386173903826.36127
33
-27275.635e-121.749e-63.559e-6
159581398940407826.56031
31
2008-07-151315.640e-121.706e-72.319e-7
15958132621785529806391547.89882145763
32 × 7 × 173 × 7537
2014-03-2117375371.725e-53.719e-54.968e-5
15958132143094372736894630732167.53867147415541072
24 × 33 × 61 × 2548095611
2017-12-0761254809561136.1838.991416.793

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
159581385260810355985211652.921
1595813225929491932339460640172374.258
1595813259400527385754857800732374.458
1595813184678806596075002429747839192993.899
1595813212038629477998058680540907112994.098
1595813223535558850888826978989003491931100.818
15958135618733815451092338477017167444364735115.436
1595813182721962888899453429252401168291503337120.459
1595813484188222795502332419961645116685441554424143141.797
1595813555919810525393964563497838692932593274432943141.996
159581347905779827993678539080300092234420078369433104608
7
51168.357
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:28:37alpertronManual testing5000001500000012-
skipped known factor: 86173903
skipped known factor: 98940407
skipped known factor: 262178552980639
--0.084--4.986%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T10:05:00J FeitsmaManual testing??26.56083.75908e-140.1578.27128e-14
2014-03-21T11:39:00TJAOIManual testing??47.898155.50055e-60.1571.21013e-5


ECM factoring results:

Old Calculation Method

Total ECM effort:14.069 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:14.069 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110009.6540.006%
25500000.89340.933%
302500000.05694.522%
3510000000.00399.737%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024913.96
50000500000020.112


Lucas-Lehmer results:
No L-L results for M1595813


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-02T02:44:05Oliver KruseGTX-2
86173903
98940407
262178552980639
5D26FCF2DBDE6D__no
2017-10-31T21:22:32kkmrkkblmbrbkc4.xlarge
86173903
98940407
262178552980639
5D26FCF2DBDE6D__no
2017-12-08T20:35:16YarBerManual testing
86173903
98940407
262178552980639
214309437273689463073
AFF143908B60B4__no
2017-12-08T21:40:48YarBerManual testing
86173903
98940407
262178552980639
214309437273689463073
AFF143908B60B4__no
2017-12-10T00:49:08Chun sung sooJhun
86173903
98940407
262178552980639
214309437273689463073
AFF143908B60B4__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
108
109
1010
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
Last modified: 2019-09-09T15:52:31+00:00