is 2 500807 - 1
has 150758 decimal digits
takes 0.006 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
Actual26759.332171.6418%1500000500000000.07076.1004%59.402873.3718%1.7300%
PrimeNet2400.000052.5000%50001700000.000219.1045%0.000261.5746%9.0746%
GPU722440.000056.8182%90002800000.000414.3594%0.000463.0188%6.2007%
Difference+23+59.3321+14.8236%+1491000+49720000+0.0703-8.2591%+59.4024+10.3529%+10.3529%

Known prime factors (3 factors, 150.7 bits, 0.03008328% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
50080724038737824.51924
23 × 3
-884.486e-121.366e-72.780e-7
500807162514726099911443.88616225285
5 × 3245057
2008-07-21532450574.601e-60.00300.0056
50080757693126175305637273434492582.2555760015951784383732
22 × 3 × 102031 × 4704465596881
2020-07-2110203147044655968812,697,4484,377.28,175.5

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
5008073906648759342772213672168.404
50080713868698868359881090334887918391333106.774
5008079375982598227343843922379441288579895938126.140
500807225386779795363784872619127803343113221027478346150.659
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T18:48:29alpertronManual testing15000005000000012-
skipped known factor: 24038737
skipped known factor: 16251472609991
--0.071--6.100%


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-11-11T12:01:32mognutsManual testing19500007215000027--0.115


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-07-21T09:20:00J FeitsmaManual testing??43.886142.26132e-60.0124.72105e-6


ECM factoring results:

Old Calculation Method

Total ECM effort:15.960 GHz-days
Estimated T-Level:26.484
DigitsB1CurvesCompleteFacMiss
2011000471 / 1004.7100.879%
2550000471 / 2801.68218.542%
30250000190 / 6400.29774.296%

New Calculation Method

Total ECM effort:15.960 GHz-days
Estimated T-Level:26.484
DigitsB1CompleteFacMiss
201100024.8980.000%
25500003.1084.467%
302500000.29874.266%
3510000000.02397.739%
4030000000.00199.854%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002813.643
250000250000001449.335
25000025000000462.982


Lucas-Lehmer results:
No L-L results for M500807


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-27T09:45:43Oliver KruseGTX-0
24038737
16251472609991
702A18948E0073__no
2017-11-03T03:31:40kkmrkkblmbrbkc4.xlarge
24038737
16251472609991
702A18948E0073__no
2020-04-18T23:48:40Oliver KruseAddPrpType5
24038737
16251472609991
0DCC2796B954F4__no
2020-07-20T18:01:28ATHec2-PRPCF
24038737
16251472609991
5769312617530563727343449
0DCC2796B954F468no


P-1 factor-bounds graph:
B1 = 1500000, B2 = 50000000 (P-1 stage 2)
B1 = 1500000 (P-1 stage 1)
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TF factor-bounds graph:
267
2
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2100
Last modified: 2021-11-11T12:01:32+00:00