is 2 28499 - 1
has 8580 decimal digits
takes 0.000 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
Actual2671,042.630277.6119%500000000100000000000.812813.6524%1,043.442980.6684%3.0565%
PrimeNet2400.000062.5000%500100000.00004.0501%0.000064.0188%1.5188%
GPU722440.000165.9091%500100000.00001.7322%0.000166.4996%0.5905%
Difference+23+1,042.6301+11.7028%+499999500+9999990000+0.8128+11.9201%+1,043.4429+14.1688%+14.1688%

Known prime factors (5 factors, 238.3 bits, 0.83604604% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2849956999515.7991
1
-111.532e-137.987e-101.626e-9
28499227993617.7994
22
2008-08-26446.132e-133.195e-96.502e-9
284993647873721.79964
26
2008-08-2664649.939e-125.112e-81.040e-7
2849910485517954863486817672269.82918396291018743617
7 × 47 × 222773 × 250998901
2009-04-042227732509989015,149.00.01110.0204
284991067631673458405135652541474180639935113.040187310374654971250860125175301
445507 × 420443168468668844395543
2018-02-094455074204431684686688443955435.705e+121.830e+133.417e+13

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
28499129953730071133.597
284992079251131271237.597
284998316895088891239.597
28499474054703171641111755.396
28499597664037909263885120372332685.628
284992390624695083190950021036312787.628
2849938249837838561732248034315912891.628
284991362632169950468009602490486336932103.426
2849921802025069601801764057079725540933107.426
2849987206952783272050204260877872686333109.426
284994970709101693723589592665777865246413738125.225
2849960853937755455634327059211486822293660139128.839
28499243412548126802162092829888322866632720740130.839
284993894584755553732717408243425043753413932741134.839
2849913874271830679596437129210804515075198447179345146.637
28499221987436481807211159552466984068900840749967346150.637
28499887938062172962183440057643206000472102758071146152.637
2849950611581605796671493899845605098820909385107294628
9
51168.436
2849911194671081229058198248823986948924807046695817975
227033
56182.869
2849963808505695897508824198471843210176507685461492876
9965653967
60198.668
2849925523066438226566657933441272564462135329973196276
25936934769
61200.667
2849940836738381096288216820532303743335182655851413604
745362550809
62204.667
2849914547892639124760729355482190949017772516731422145
5050779344898231
66216.466
2849923276532509841073320705535207810663620762008747240
56880920033562191
67220.466
2849993104904937212860394175636215273542182992555313419
86709444046596337
67222.466
2849953068864765161958296076170886343766308883926603096
1900451601211944612663
72238.265
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-12-28T07:28:38kkmrkkblmbrbkManual testing5000000001000000000012-
skipped known factor: 56999
skipped known factor: 227993
skipped known factor: 3647873
skipped known factor: 1048551795486348681767
--0.813--13.652%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-08-26T19:59:00ANONYMOUSManual testing??17.79965.30471e-163.73488e-51.26209e-15
2008-08-26T19:59:00ANONYMOUSManual testing??21.79971.35801e-133.73488e-53.23094e-13


ECM factoring results:

Old Calculation Method

Total ECM effort:19.200 GHz-days
Estimated T-Level:31.617
DigitsB1CurvesCompleteFacMiss
20110001270 / 10012.7000.000%
25500001270 / 2804.5361.063%
302500001119 / 6401.74817.381%
351000000511 / 15800.32372.360%
403000000500 / 47000.10689.907%

New Calculation Method

Total ECM effort:19.200 GHz-days
Estimated T-Level:31.617
DigitsB1CompleteFacMiss
2011000157.1090.000%
255000031.8890.000%
302500005.4960.410%
3510000000.79745.086%
4030000000.09890.623%
45110000000.01198.945%
50440000000.00199.899%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000001510.087
250000250000006081.747
1000000100000000110.126
3000000300000000401.379
300000030000000046015.86


Lucas-Lehmer results:
No L-L results for M28499


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21T19:38:22Oliver KruseOllaptop
56999
227993
3647873
1048551795486348681767
6A022E709D906509no
2017-09-21T21:28:58Oliver KruseManual testing
56999
227993
3647873
1048551795486348681767
6A022E709D906509no
2017-10-02T10:29:34kkmrkkblmbrbkManual testing
56999
227993
3647873
1048551795486348681767
6A022E709D9065__no
2017-12-07T03:12:08ATHxps
56999
227993
3647873
1048551795486348681767
6A022E709D9065__no
2018-02-09T23:42:01ANONYMOUSdory
56999
227993
3647873
1048551795486348681767
10676316734584051356525414741806399
581E765A716E1D__no
2018-02-10T16:51:10Daniel BambergerBackup_laptop
56999
227993
3647873
1048551795486348681767
10676316734584051356525414741806399
581E765A716E1D__no
2022-05-12T18:18:47Jorge CoveiroManual testing
56999
581E765A716E1D1Cno


P-1 factor-bounds graph:
B1 = 500000000, B2 = 10000000000 (P-1 stage 2)
B1 = 500000000 (P-1 stage 1)
100
101
102
103
104
105
106
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108
109
100
101
102
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104
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108
109
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
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1024
TF factor-bounds graph:
267
2
210
220
230
240
250
260
270
280
290
2100
2110
2120
Last modified: 2022-05-12T18:18:47+00:00