is 2 280759 - 1
has 84517 decimal digits
takes 0.002 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-daysProbability
Actual267105.834271.6418%500000050000000.04953.5941%105.883872.6610%
Target2440.000056.8182%50001300000.000110.8435%0.000161.5006%
Difference+23+105.8342+14.8236%+4995000+4870000+0.0494-7.2494%+105.8837+11.1604%

Known prime factors (4 factors, 253.4 bits, 0.09024754% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
2807592807591721.4215
5
-159.962e-131.207e-82.017e-8
280759761004793841211446.113135526340
22 × 5 × 509 × 13313
2014-02-05509133135.695e-51.196e-51.343e-5
28075920602895991850876311960.8383669142572785
5 × 101 × 419 × 17340403
2014-08-28419173404030.58320.00940.0175
2807594273266476436891132720657361594855427338125.00776102039051942967682614935969904
24 × 7 × 192 × 79 × 1637 × 31277 × 325043 × 338461 × 4229809
2016-11-0333846142298094.891e+110.00550.0068

11 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-11-03kkmrkkblmbrbkManual testing5000000500000038125.0070.0500.0040.0993.594%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2014-02-05TJAOIManual testing??46.113142.35605e-50.0044.90135e-5


ECM factoring results:
Total ECM effort:77.173 GHz-days
Estimated T-Level:29.966
DigitsB1CompleteFacMiss
201100060.1460.000%
25500009.1720.010%
302500000.99337.042%
3510000000.08491.962%
4030000000.00699.429%


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0
5000050000002812.054
250000250000001696.177
2500003525000070.291
25000035566001140.584
25000036750000281.184
2500003850000070.302
25000055133578522766.58


Lucas-Lehmer results:
No L-L results for M280759


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-22Oliver KruseOllaptopB3889D70C68AB5__?
2017-09-22Oliver KruseManual testingB3889D70C68AB5__?
2017-10-12Oliver KruseGTX-1B3889D70C68AB5__no
2017-11-06kkmrkkblmbrbkc4.xlarge
2807591
76100479384121
2060289599185087631
42732664764368911327206573615948554273
B3889D70C68AB5__no
2020-04-17Oliver KruseAddPrpType5
2807591
76100479384121
2060289599185087631
42732664764368911327206573615948554273
49764BE012E483__no


P-1 factor-bounds graph:
B1 = 5000000 (P-1 stage 1)
100
101
102
103
104
105
106
107
100
101
102
103
104
105
106
107
108
TF factor-bounds graph:
267
2
220
230
240
250
260
270
280
290
2100
2110
2120
2130
Last modified: 2022-12-24T10:07:07+00:00