is 2 9283 - 1
has 2795 decimal digits
takes 0.000 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2673,200.896079.1045%200000000200000000000.226113.3220%3,201.122181.8882%2.7837%
PrimeNet2400.000065.0000%500100000.00003.0142%0.000066.0550%1.0550%
GPU722440.000368.1818%500100000.00001.2352%0.000368.5748%0.3930%
Difference+23+3,200.8957+10.9227%+199999500+19999990000+0.2261+12.0868%+3,201.1219+13.3133%+2.3907%

Known prime factors (5 factors, 156.5 bits, 1.68537258% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
92835941121722.502320
26 × 5
-64646.436e-111.132e-82.303e-8
928329352847824.8071581
3 × 17 × 31
-17313.232e-103.141e-96.118e-9
928334031479825.0201833
3 × 13 × 47
-13476.726e-102.626e-94.678e-9
928341532143825.3082237
2237
-122377.147e-102.172e-84.028e-8
92835073446730073719371858.81627326547075696
24 × 3 × 11 × 1171 × 44197117
-1171441971175.67270.00040.0008

26 Composite Factors:
exponentprime factorscomposite factordigitsbits*
92831743888157214871547.309
92832021851345479591547.523
92832467474869523031547.810
92839989207962707131549.827
928312190866390611211650.115
928314134002523294971650.328
928359347093200606546892732272.330
928372427412321454462566412272.617
928383971819205200735461372272.830
9283414873213563891190279592375.135
928330141960910422305697213772581.318
9283148920105630504183388546392683.623
9283172656895852122449192048232683.836
9283210711115096304113416709912684.123
92832464811961441918792285068020393097.637
92838847523668836066445175441171031932106.125
928310257755097418575774663107722658333106.338
928312518602308320693906063969972091133106.626
928350679714474422848763994653118108133108.643
928361849711226212049065913332316137733108.930
928371708108884664564133543815512568933109.144
9283301094315937997549671592677527707513180140131.145
9283367456618209984155158528082803384328361740131.433
9283426026551564967219929643966761848855736940131.646
92832104837148750899597333599184536661498658341133.951
928312505092186024093366610190120833634899570297954348156.453
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2021-08-27T05:18:11Seth_TrManual testing100000000100000000-
skipped known factor: 5941121
skipped known factor: 29352847
skipped known factor: 34031479
skipped known factor: 41532143
skipped known factor: 507344673007371937
--0.018--5.625%
2021-08-27T06:24:02Seth_TrManual testing400000000400000000-
skipped known factor: 5941121
skipped known factor: 29352847
skipped known factor: 34031479
skipped known factor: 41532143
skipped known factor: 507344673007371937
--0.071--7.575%
2021-09-05T02:09:15H Michaelson20000000020000000000-
skipped known factor: 5941121
skipped known factor: 29352847
skipped known factor: 34031479
skipped known factor: 41532143
skipped known factor: 507344673007371937
--0.226--13.322%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2009-03-02T00:00:00kiwiboyv4_computers??97.637305.18612e+112.44395e-61.11966e+12


ECM factoring results:
Total ECM effort:33.345 GHz-days
Estimated T-Level:39.536
DigitsB1CompleteFacMiss
2011000844.7560.000%
2550000218.6250.000%
3025000043.3900.000%
3510000006.9020.101%
4030000000.90740.367%
45110000000.10490.125%
50440000000.01098.961%


ECM Summary

B1B2factorcurvesGHz-days
5000050000002360.030
20000002000000002651.349
30000003000000003,87229.56
various792.4113


Lucas-Lehmer results:
No L-L results for M9283


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-21T18:59:20Oliver KruseOliver-PC8A292C051244C2__?
2017-09-21T19:21:43Oliver KruseManual testing8A292C051244C2__?
2017-10-02T10:03:02kkmrkkblmbrbkManual testing
5941121
29352847
34031479
41532143
507344673007371937
8A292C051244C2__no
2017-12-07T02:54:33ATHManual testing
5941121
29352847
34031479
41532143
507344673007371937
8A292C051244C2__no
2020-04-17T13:47:06Oliver KruseManual testing
5941121
29352847
34031479
41532143
507344673007371937
ED680A279BEE3C__no


P-1 factor-bounds graph:
B1 = 200000000, B2 = 20000000000 (P-1 stage 2)
B1 = 400000000 (P-1 stage 1)
B1 = 200000000 (P-1 stage 1)
B1 = 100000000 (P-1 stage 1)
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TF factor-bounds graph:
267
2
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Last modified: 2021-09-05T02:09:15+00:00