is 2 4580027 - 1
has 1378726 decimal digits
takes 0.603 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
factored, 0 LL tests remaining
ResidueStatus
L-L6AC1B32784D2E2F4double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual2676.487765.6716 %1988203616343031.00008.1632 %7.487768.4739 %
Target2651.592964.6154 %2800027500000.03372.1371 %1.626665.3716 %
Difference+2+4.8948+1.0563 %+1960203+58884303+0.9663+6.0261%+5.8611+3.1024 %

Known prime factors (2 factors, 141.5 bits, 0.00309006% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
45800274712333319960090363592168.67551444383624377
193 × 75617 × 3525017
2016-06-2375617352501721.4250.05030.0685
458002785168302947577150869292272.851929779485443832
23 × 3 × 335747 × 115386919
2016-06-23335747115386919269.021.26082.2417

1 Composite Factors:
P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2014-11-06JossManual testing7401474014--0.0151.186%
2016-06-23Ismo Laitela19882036163430312243141.5261.0009.596%


Trial Factoring results:
5758596061626364656667
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
1997-12-13ANONYMOUSv4_computers212600.017
2010-08-22markroldgamer2612620.067
2012-01-17GrunwalderGIMPManual testing212630.348
2016-02-23Mark RoseManual testing2602630.248
2014-12-29JayderManual testing2632640.429
2014-12-29lycornManual testing2642650.816
2015-07-02snme2pm1Manual testing2652661.632


ECM factoring results:
Total ECM effort:0.983 GHz-days
Estimated T-Level:1.154
DigitsB1CompleteFacMiss
20110000.23179.392%
25500000.02197.887%
302500000.00199.865%


ECM Summary

B1B2factorcurvesGHz-days
50000500000060.983


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-04-11ANONYMOUSv4_computers719B8B5085F971650.603


PRP results:
dateuseridcompidcofactorsres64
2017-09-20kkmrkkblmbrbkManual testing
471233331996009036359
8516830294757715086929
C23CE42D0A8E2CC6
2018-02-25Oliver KruseGTX-0
471233331996009036359
8516830294757715086929
C23CE42D0A8E2CC6


CERT results:
No CERT results for M4580027


P-1 factor-bounds graph:
B1 = 1988203, B2 = 61634303 (P-1 stage 2)
B1 = 1988203 (P-1 stage 1)
B1 = 74014 (P-1 stage 1)
103
104
105
106
107
103
104
105
106
107
108
109
TF factor-bounds graph:
266
265
264
263
262
260
this exponent TF target: 65
TF double-checked to: 67
ECM T-Level=1.15 ~= -13-bit
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Last modified: 2024-03-13T02:15:48+00:00