is 2 4834231 - 1
has 1455249 decimal digits
takes 0.637 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L9F3A1332968BAD47double-checked
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2676.146665.6716%300004350000.00991.5679%6.156566.2099%0.5382%
PrimeNet2610.063562.2951%200004500000.00833.2285%0.071863.5124%1.2173%
GPU722651.509264.6154%320006500000.01252.3250%1.521765.4381%0.8227%
Difference+2+4.6374+1.0563%-2000-215000-0.0026-0.7571%+4.6348+0.7718%+0.7718%

Known prime factors (3 factors, 210.0 bits, 0.00434478% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
4834231150975993072298295692063.7111561530604064
25 × 48797831377
2017-04-1832487978313770.4290507.58948.02
4834231163545556604188921932063.8261691536426416
24 × 32 × 24151 × 486389
2017-05-18241514863890.58650.00940.0094
483423168360966881255860829168812582.499707051099557053240
23 × 3 × 5 × 112 × 61 × 43403 × 18392239
2010-04-044340318392239347,3330.19910.3573

4 Composite Factors:
exponentprime factorscomposite factordigitsbits*
483423124691452820879195458136509460317465481739127.537
483423110320864862280098072988897799151065202305428945146.210
483423111180132378595514619643446928177979211881003345146.326
483423116879315885382142816077282488031699006313256050610
22837677265777
64210.037
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2009-08-31T20:34:00Carsten Kossendeydurandal30000435000---0.010--1.568%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2017-04-18T15:17:55TJAOIManual testing263264*63.711200.0991.2940.201
2017-05-18T16:20:50TJAOIManual testing263264*63.826200.2561.2940.521


ECM factoring results:

Old Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CurvesCompleteFacMiss

New Calculation Method

Total ECM effort:0.000 GHz-days
DigitsB1CompleteFacMiss


ECM Summary

B1B2factorcurvesGHz-days
10.00000e+0


Lucas-Lehmer results:
dateuseridcompidres64spent (GHz-days)
1998-07-11T00:00:00ANONYMOUSv4_computers9F3A1332968BAD470.637
2000-03-15T00:00:00ANONYMOUSv4_computers9F3A1332968BAD470.637


PRP results:
dateuseridcompidcofactorsres64PRP
2017-09-28T13:08:57alpertronManual testing
15097599307229829569
16354555660418892193
6836096688125586082916881
514E786D5C195A__no
2018-01-08T16:03:03kkmrkkblmbrbkc4.xlarge
15097599307229829569
16354555660418892193
6836096688125586082916881
514E786D5C195A__no


P-1 factor-bounds graph:
B1 = 30000, B2 = 435000 (P-1 stage 2)
B1 = 30000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
108
109
1010
1011
TF factor-bounds graph:
267
264
250
260
270
280
290
2100
Last modified: 2018-01-08T16:03:03+00:00