is 2 1546291 - 1
has 465480 decimal digits
takes 0.069 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
Actual26719.216368.6567%500000150000000.08354.9666%19.299870.2134%1.5567%
PrimeNet2570.012463.1579%65001100000.00082.4193%0.013264.0492%0.8913%
GPU722610.198765.5738%6500600000.00061.0484%0.199365.9347%0.3609%
Difference+6+19.0176+3.0829%+493500+14940000+0.0829+3.9182%+19.1005+4.2787%+4.2787%

Known prime factors (4 factors, 222.9 bits, 0.01441688% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1546291253107580287911444.5258184345
3 × 5 × 13 × 19 × 472
-220922092.278e-60.00010.0003
15462912082631960538231547.56567342821
3 × 7 × 13 × 19 × 12983
2008-08-2619129831.659e-54.698e-58.556e-5
15462912352055810481003211857.70776054759760
24 × 5 × 7 × 135812071
2015-07-21161358120710.01500.47920.8951
1546291103349800214760316989772373.1303341861273678768
24 × 131 × 227 × 7023786179
2017-12-0122770237861791,689.124.78546.291

11 Composite Factors:
exponentprime factorscomposite factordigitsbits*
154629152712993616209746054196179932892.090
1546291595323154892965746850917434191131102.232
15462914898466603877387256883781957718332105.272
154629126158617855596905093145212321124680736117.655
1546291215239597042500662872216440462603907137120.695
1546291243084498107177836989388640916396907161740130.837
1546291123983902922854162523503095769515089816067575346149.797
15462915447877358957213231248891832924359079821410889316150165.220
154629161526529121408820800056215629453087097422389226925
047
53175.361
154629150625554486940343813399729163625053510054161527364
1791
54178.402
154629112813711596923215419312571408576477344799603649199
944796030998804681
68222.927
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:28:40alpertronManual testing5000001500000012-
skipped known factor: 25310758028791
skipped known factor: 208263196053823
--0.084--4.967%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-08-26T20:19:00ANONYMOUSManual testing??47.565154.46421e-60.1539.87024e-6
2015-07-10T10:12:00TJAOIManual testing257258*57.707180.0030.1400.005


ECM factoring results:

Old Calculation Method

Total ECM effort:14.025 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:14.025 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110009.6540.006%
25500000.89340.933%
302500000.05694.522%
3510000000.00399.737%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025013.97
50000500000010.056


Lucas-Lehmer results:
No L-L results for M1546291


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T17:52:02Oliver KruseGTX-0
25310758028791
208263196053823
235205581048100321
5BA7DC7DBA279664no
2017-10-05T21:04:59Oliver KruseManual testing
25310758028791
208263196053823
235205581048100321
5BA7DC7DBA2796__no
2017-11-10T16:07:46kkmrkkblmbrbkc4.xlarge
25310758028791
208263196053823
235205581048100321
5BA7DC7DBA2796__no
2017-12-01T23:25:48kkmrkkblmbrbkc4.xlarge
25310758028791
208263196053823
235205581048100321
10334980021476031698977
0FFCCCC0CC8692__no
2017-12-02T17:36:47Oliver KruseGTX-0
25310758028791
208263196053823
235205581048100321
10334980021476031698977
0FFCCCC0CC8692__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
258
2
240
250
260
270
280
290
2100
Last modified: 2019-07-19T09:16:12+00:00