is 2 145999207 - 1
has 43950141 decimal digits
takes 837.214 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
Actual2726.550361.1111 %1495000149500012.43073.2196 %18.981062.3632 %
Target277209.646163.6364 %90000017000000084.08834.1339 %293.734465.1396 %
Difference-5-203.0958-2.5253 %+595000-168505000-71.6576-0.9143 %-274.7534-2.7764 %

Known prime factors (1 factor, 82.5 bits, 0.00005647% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
14599920766128522464082932437274332582.45222646877275190588
22 × 3 × 7 × 43 × 73 × 239807 × 358159
2020-02-282398073581596,708.72.04764.0580

P-1 results:
dateusercompB1B2BSstagefactordigitsbits*GHz-daysFac Prob
2020-02-28timbitManual testing1495000149500012582.45212.431.909%


Trial Factoring results:
575859606162636465666768697071727374757677
 BitsFactor
dateuseridcompidfromtofactorbits*digitsGHz-days
2010-06-20Torchwood Instituteph2-940-12632640.013
2010-12-30Richard2642650.026
2012-12-26sasaki3old-home2652660.051
2015-03-05aurashiftusslcburnin312662670.102
2016-03-24DerekManual testing2672680.205
2017-02-07JoDuManual testing2682690.409
2017-03-08Choi4KANGManual testing2692700.819
2017-05-08StyMManual testing2702711.638
2017-05-08StyMManual testing2712723.276


ECM factoring results:
No ECM results for M145999207


Lucas-Lehmer results:
No L-L results for M145999207


PRP results:
No PRP results for M145999207


CERT results:
No CERT results for M145999207


P-1 factor-bounds graph:
B1 = 1495000 (P-1 stage 1)
104
105
106
107
104
105
106
107
TF factor-bounds graph:
272
271
270
269
268
267
266
265
264
this exponent TF target: 77
TF double-checked to: 67
250
260
270
280
290
JSON version of this page
Last modified: 2024-03-13T02:15:48+00:00