is 2 2844629 - 1
has 856319 decimal digits
takes 0.220 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
0 primality tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbability
Actual26710.445667.1642%3600002873801701.79168.0056%12.237269.7929%
Target2630.561165.0794%160002600000.00331.8283%0.564365.7178%
Difference+4+9.8846+2.0848%+344000+287120170+1.7883+6.1773%+11.6729+4.0751%

Known prime factors (6 factors, 351.0 bits, 0.01233866% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
284462985338871826.34715
3 × 5
-353.153e-123.482e-76.838e-7
284462911761915096631340.097206739
33 × 13 × 19 × 31
2008-09-3027319.004e-83.048e-66.154e-6
2844629560372114382171445.6719849652
22 × 2462413
2014-01-28424624133.228e-60.01500.0281
2844629151866364251776631753.7542669352739
1847 × 1445237
2014-10-10184714452370.00080.00900.0165
2844629497718665153613429565386732685.3648748393290541814584
23 × 3 × 29 × 1471 × 76343 × 111927593
2023-01-31763431119275933,019,2970.69101.2755
284462910708302906492039654750237207613199.757188219674806311115698220
22 × 32 × 5 × 7 × 1021 × 11863 × 161507 × 76362977
2023-01-31161507763629775.129e+100.48300.8702

57 Composite Factors:
P-1 results:
 GHz-DaysworthFactor
probability
dateuseridcompidb1b2estagefactordigitsbits*spentsaved
2023-01-31USAFSSUSAFSACS36000028738017056185.1201.7920.4393.5838.006%


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-30markrManual testing??40.097133.85520e-81.0041.76129e-7
2014-01-28TJAOIManual testing??45.671141.58069e-61.0047.22151e-6
2014-10-10TJAOIManual testing253254*53.754170.0001.0030.002


ECM factoring results:
Total ECM effort:0.313 GHz-days
Estimated T-Level:0.577
DigitsB1CompleteFacMiss
20110000.11589.102%
25500000.01198.938%


ECM Summary

B1B2factorcurvesGHz-days
50000500000030.313


Lucas-Lehmer results:
No L-L results for M2844629


PRP results:
dateuseridcompidcofactorsres64PRP
2017-10-15YarBerManual testing
85338871
1176191509663
56037211438217
15186636425177663
no
2017-11-16Oliver KruseGTX-1
85338871
1176191509663
56037211438217
15186636425177663
85FD1616F2C455__no
2023-02-01LordJuliusWhiteBox
85338871
1176191509663
56037211438217
15186636425177663
49771866515361342956538673
1070830290649203965475023720761
E2B57190468EDD__no


P-1 factor-bounds graph:
B1 = 360000, B2 = 287380170 (P-1 stage 2)
B1 = 360000 (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:
254
2
this exponent TF target: 63
TF double-checked to: 67.7
ECM T-Level=0.58 ~= -15-bit
250
260
270
280
290
2100
Last modified: 2023-03-25T13:08:14+00:00