is 2 1482889 - 1
has 446395 decimal digits
takes 0.057 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
Actual26720.037968.6567%500000150000000.07144.9415%20.109370.2056%1.5488%
PrimeNet2570.012963.1579%65001000000.00062.3350%0.013664.0182%0.8603%
GPU722610.207165.5738%6000500000.00050.9455%0.207665.8993%0.3255%
Difference+6+19.8307+3.0829%+494000+14950000+0.0710+3.9960%+19.9017+4.3063%+4.3063%

Known prime factors (2 factors, 90.6 bits, 0.00611008% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
148288932623559824.95911
11
-1111.511e-128.552e-81.127e-7
1482889577408065772275981592065.64619469025185711
29 × 1163 × 577253393
2018-10-0811635772533937.54971.74123.2520

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
148288918837106100797726049684278812890.606
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:14:56alpertronManual testing5000001500000012-
skipped known factor: 32623559
--0.071--4.942%


Trial Factoring results:
No TF results for M1482889


ECM factoring results:

Old Calculation Method

Total ECM effort:26.553 GHz-days
Estimated T-Level:25.391
DigitsB1CurvesCompleteFacMiss
2011000301 / 1003.0104.855%
2550000301 / 2801.07534.064%
3025000050 / 6400.07892.479%

New Calculation Method

Total ECM effort:26.553 GHz-days
Estimated T-Level:25.391
DigitsB1CompleteFacMiss
201100012.2630.000%
25500001.39024.916%
302500000.11689.004%
3510000000.00899.198%


ECM Summary

B1B2factorcurvesGHz-days
50000500000024911.83
50000500000020.095
250000400000005014.62


Lucas-Lehmer results:
No L-L results for M1482889


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T06:50:18Oliver KruseGTX-0
32623559
2B68B3DCA50DC5__no
2017-10-28T15:03:42kkmrkkblmbrbkold
32623559
2B68B3DCA50DC5__no
2018-10-08T15:01:23ANONYMOUS
32623559
57740806577227598159
BB7E97EED09468__no
2018-10-08T15:08:47ATHec2-PRPCFDC
32623559
57740806577227598159
BB7E97EED09468__no


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
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2022-04-07T09:48:13+00:00