is 2 15891329 - 1
has 4783767 decimal digits
takes 8.689 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
Actual27015.036565.7143%----15.036565.7143%
Target2697.512765.2174%11000028000000.20343.1220%7.716166.3033%
Difference+1+7.5238+0.4969%-110000-2800000-0.2034-3.1220%+7.3204-0.5890%

Known prime factors (6 factors, 225.9 bits, 0.00142141% known):
Remaining cofactor is not a probable-prime

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
15891329603870503929.17019
19
-1194.519e-121.570e-61.614e-6
15891329858131767929.67727
33
2008-09-0827274.527e-122.141e-54.357e-5
1589132911441756891030.09236
22 × 32
2008-09-08999.071e-127.136e-61.452e-5
1589132936550056711031.767115
5 × 23
2008-09-085231.845e-114.742e-68.068e-6
158913291716263532011237.3205400
23 × 33 × 52
2008-09-0825251.347e-91.982e-54.034e-5
158913292669513533808707356232167.8558399277158659
2887 × 2909344357
2023-01-16288729093443571.9020125.68234.73

57 Composite Factors:
P-1 results:
No P-1 results for M15891329


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2008-09-08Will EdgingtonManual testing??30.092107.01397e-1418.141.46401e-13
2008-09-08Will EdgingtonManual testing??37.320121.94521e-1018.144.06020e-10
2008-09-08Will EdgingtonManual testing??31.767104.48115e-1318.149.35342e-13
2008-09-08Will EdgingtonManual testing??29.67792.63024e-1418.145.49005e-14
2023-01-16LordJuliusManual testing26726867.855210.03217.680.065
2023-01-16LordJuliusManual testing267268
skipped known factors(?)
--1.881--
2023-01-16LordJuliusManual testing268269--3.762--
2023-01-16LordJuliusManual testing269270--7.524--


ECM factoring results:
No ECM results for M15891329


Lucas-Lehmer results:
No L-L results for M15891329


PRP results:
dateuseridcompidcofactorsres64PRP
2023-01-29Naegi Makoto5950X
603870503
858131767
1144175689
3655005671
171626353201
266951353380870735623
18610D43BF44D5D6no


P-1 factor-bounds graph:
100
101
102
103
104
100
101
102
103
104
105
106
107
108
109
1010
TF factor-bounds graph:
270
269
268
2
220
230
240
250
260
270
280
290
2100
Last modified: 2023-01-29T02:06:54+00:00