is 2 1770973 - 1
has 533116 decimal digits
takes 0.096 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
Actual26716.778368.6567%500000150000000.10155.0486%16.879870.2391%1.5824%
PrimeNet2570.010863.1579%80001400000.00122.8088%0.012064.1927%1.0348%
GPU722610.173565.5738%80001200000.00111.4545%0.174666.0745%0.5007%
Difference+6+16.6048+3.0829%+492000+14880000+0.1004+3.5941%+16.7052+4.1646%+4.1646%

Known prime factors (2 factors, 114.4 bits, 0.00646197% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
177097345869723736791342.0611295043
3 × 17 × 67 × 379
-673794.342e-76.608e-61.073e-5
177097361416579268837151205132272.3791733978419457472
26 × 32 × 73 × 41238071239
2020-08-137341238071239850.04176.74330.09

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
17709732817161523920224097374953915417732735114.440
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:31:17alpertronManual testing5000001500000012-
skipped known factor: 4586972373679
--0.101--5.049%


Trial Factoring results:
No TF results for M1770973


ECM factoring results:

Old Calculation Method

Total ECM effort:17.274 GHz-days
Estimated T-Level:24.482
DigitsB1CurvesCompleteFacMiss
2011000251 / 1002.5108.025%
2550000251 / 2800.89640.737%

New Calculation Method

Total ECM effort:17.274 GHz-days
Estimated T-Level:24.482
DigitsB1CompleteFacMiss
20110008.0970.030%
25500000.73248.105%
302500000.04595.594%
3510000000.00299.794%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024817.07
50000500000030.206


Lucas-Lehmer results:
No L-L results for M1770973


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T11:38:03Oliver KruseGTX-3
4586972373679
0E8BFFEB55A21C__no
2017-11-04T09:49:51kkmrkkblmbrbkc4.xlarge
4586972373679
0E8BFFEB55A21C__no
2020-08-15T07:45:13Team_InspectorSpudBoy4
4586972373679
6141657926883715120513
2EF7C95E8258AA4Dno


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
1011
TF factor-bounds graph:
267
240
250
260
270
280
290
2100
Last modified: 2020-09-18T09:20:02+00:00