is 2 2358751 - 1
has 710055 decimal digits
takes 0.159 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
Actual26712.597367.1642%2000000600000000.50557.6017%13.102869.6603%2.4961%
PrimeNet2580.016362.0690%110002000000.00213.0507%0.018463.2261%1.1572%
GPU722620.260564.5161%130002200000.00241.8368%0.262865.1679%0.6518%
Difference+5+12.3368+2.6481%+1987000+59780000+0.5031+5.7649%+12.8399+4.4924%+4.4924%

Known prime factors (2 factors, 103.6 bits, 0.00439056% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
23587517995977189931239.540169496
23 × 21187
-8211875.239e-80.00010.0002
2358751187273148504819547292064.0223969752392364
22 × 11 × 136861 × 659221
2017-06-281368616592212.42920.01620.0273

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
23587511497431823730910584801628946789732103.562
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2018-04-27T12:00:19alpertronManual testing20000006000000012-
skipped known factor: 799597718993
skipped known factor: 18727314850481954729
--0.505--7.602%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2017-06-28T10:12:19TJAOIManual testing264265*64.022200.9200.3241.872


ECM factoring results:

Old Calculation Method

Total ECM effort:0.533 GHz-days
Estimated T-Level:0.300
DigitsB1CurvesCompleteFacMiss
20110006 / 1000.06094.148%
25500006 / 2800.02197.876%

New Calculation Method

Total ECM effort:0.533 GHz-days
Estimated T-Level:0.300
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000060.533


Lucas-Lehmer results:
No L-L results for M2358751


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T13:09:24alpertronManual testing
799597718993
18727314850481954729
899A080F9C9AC4__no
2017-11-01T08:30:45Oliver KruseGTX-1
799597718993
18727314850481954729
899A080F9C9AC4__no


P-1 factor-bounds graph:
B1 = 2000000, B2 = 60000000 (P-1 stage 2)
B1 = 2000000 (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
265
230
240
250
260
270
280
290
2100
Last modified: 2018-09-28T16:56:30+00:00