is 2 1812773 - 1
has 545700 decimal digits
takes 0.098 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
Actual26716.391468.6567%500000150000000.10155.0628%16.492970.2436%1.5868%
PrimeNet2570.010663.1579%80001500000.00122.8740%0.011864.2167%1.0588%
GPU722610.169565.5738%90001300000.00121.5566%0.170766.1097%0.5359%
Difference+6+16.2220+3.0829%+491000+14870000+0.1002+3.5062%+16.3222+4.1339%+4.1339%

Known prime factors (3 factors, 148.1 bits, 0.00816943% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
18127732686783374231237.96774107
11 × 6737
-1167371.051e-82.969e-55.394e-5
181277316845990722631340.616464647
464647
2008-07-1514646471.271e-70.00200.0037
18127738409636081510754230732169.511231955023643632
24 × 33 × 23 × 23344909787
2020-09-18272334490978790.871100.05186.87

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
18127734526152779599510741982492478.583
181277322594870407127819568072997356087933107.478
1812773141668651409824672245451602452419934110.126
181277338063297725750237946833828720727328195079917745148.093
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-16T12:37:14alpertronManual testing5000001500000012-
skipped known factor: 268678337423
skipped known factor: 1684599072263
--0.101--5.063%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-15T07:46:00J FeitsmaManual testing??40.616134.62948e-80.2119.91482e-8


ECM factoring results:

Old Calculation Method

Total ECM effort:19.626 GHz-days
Estimated T-Level:24.607
DigitsB1CurvesCompleteFacMiss
2011000258 / 1002.5807.480%
2550000258 / 2800.92139.729%

New Calculation Method

Total ECM effort:19.626 GHz-days
Estimated T-Level:24.607
DigitsB1CompleteFacMiss
20110008.8160.015%
25500000.79944.991%
302500000.04995.179%
3510000000.00299.773%


ECM Summary

B1B2factorcurvesGHz-days
500005000000332.277
50000500000030.207
50000650000022217.14


Lucas-Lehmer results:
No L-L results for M1812773


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-03T21:31:19Oliver KruseGTX-1
268678337423
1684599072263
CA8240A0A11491__no
2017-11-05T19:18:25kkmrkkblmbrbkc4.xlarge
268678337423
1684599072263
CA8240A0A11491__no
2020-09-18T23:03:35pew10980xe_1
268678337423
1684599072263
840963608151075423073
BE46BA78DDE78337no
2020-09-19T18:25:26kutenshadar
268678337423
1684599072263
840963608151075423073
BE46BA78DDE78337no


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
2
230
240
250
260
270
280
290
2100
Last modified: 2021-03-05T18:08:48+00:00