is 2 105425731 - 1
has 31736308 decimal digits
takes 432.392 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
Actual276145.163764.4737 %8910005149800021.69594.6894 %166.859766.1397 %
Target276145.163764.4737 %70000012000000042.81733.9676 %187.981065.8832 %
Difference---+191000-68502000-21.1213+0.7218%-21.1213+0.2564 %

Known prime factors (1 factor, 91.5 bits, 0.00008682% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
10542573135650275636301209862883196972891.52616907767818228934008
23 × 3 × 193 × 18253 × 149113 × 1341121
2021-08-0814911313411218,142,1261.27301.8047

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2021-08-08Ben Deloi-0f665642ac10742618910005149800022891.52621.064.689%


Trial Factoring results:
5758596061626364656667686970717273747576
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-04-20rabbutrabbit2632640.019
2010-08-31sasaki3mate242642650.035
2012-05-13omiXorpLLB16-T5500-172652660.071
2014-10-21g0bManual testing2662670.142
2015-01-14SMoffatManual testing2672680.284
2015-01-14Brandon VincentManual testing2682690.567
2015-01-21Earle LoweManual testing2692701.134
2015-02-02Earle LoweManual testing2702712.268
2019-01-29Niels_Mache_NextcloudManual testing2712724.536
2019-12-30moroquendoManual testing2722739.073
2020-04-02SRBaseManual testing27327418.15
2021-03-28TheJudgerManual testing274276108.9


ECM factoring results:
No ECM results for M105425731


Lucas-Lehmer results:
No L-L results for M105425731


PRP results:
No PRP results for M105425731


CERT results:
No CERT results for M105425731


P-1 factor-bounds graph:
B1 = 891000, B2 = 51498000 (P-1 stage 2)
B1 = 891000 (P-1 stage 1)
104
105
106
104
105
106
107
108
TF factor-bounds graph:
276
274
273
272
271
270
269
268
267
266
265
264
this exponent TF target: 76
TF double-checked to: 67
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Last modified: 2024-03-13T02:15:48+00:00