is 2 1482869 - 1
has 446389 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
Actual26720.038168.6567%500000150000000.07144.9415%20.109570.2055%1.5488%
PrimeNet2570.012963.1579%65001000000.00062.3350%0.013664.0182%0.8603%
GPU722610.207265.5738%6000500000.00050.9455%0.207665.8993%0.3255%
Difference+6+19.8310+3.0829%+494000+14950000+0.0710+3.9960%+19.9019+4.3063%+4.3063%

Known prime factors (1 factor, 27.7 bits, 0.00186597% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1482869213533137927.67072
23 × 32
-991.225e-114.983e-71.014e-6

P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2016-03-17T19:14:56alpertronManual testing5000001500000012-
skipped known factor: 213533137
--0.071--4.942%


Trial Factoring results:
No TF results for M1482869


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
201100014.6540.000%
25500001.67418.740%
302500000.14486.623%
3510000000.01099.005%


ECM Summary

B1B2factorcurvesGHz-days
50000500000025111.93
250000400000005014.62


Lucas-Lehmer results:
No L-L results for M1482869


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-01T06:38:26Oliver KruseGTX-1
213533137
5697A0FA1D2BE0__no
2017-10-28T15:06:45kkmrkkblmbrbkold
213533137
5697A0FA1D2BE0__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
TF factor-bounds graph:
267
220
230
240
250
260
270
280
290
2100
Last modified: 2022-04-07T09:48:13+00:00