Triplets of practical numbers
A triplet of practical numbers is a triplet (m-2, m, m+2) of
numbers all practicals.
It is known that there are infinitely many such triplets.
This list shows practical numbers m
such that m-2 and m+2 are also practical.
Table no. 1
|
1
|
4
|
|
2
|
6
|
|
3
|
18
|
|
4
|
30
|
|
5
|
198
|
|
6
|
306
|
|
7
|
462
|
|
8
|
702
|
|
9
|
1482
|
|
10
|
2550
|
|
11
|
3330
|
|
12
|
4422
|
|
13
|
5778
|
|
14
|
6102
|
|
15
|
6498
|
|
16
|
9042
|
|
17
|
11178
|
|
18
|
11778
|
|
19
|
14418
|
|
20
|
15498
|
Table no.
2
|
21
|
17298
|
|
22
|
17442
|
|
23
|
19458
|
|
24
|
20862
|
|
25
|
21582
|
|
26
|
22878
|
|
27
|
23322
|
|
28
|
23550
|
|
29
|
25230
|
|
30
|
26622
|
|
31
|
26862
|
|
32
|
26910
|
|
33
|
27378
|
|
34
|
30210
|
|
35
|
34542
|
|
36
|
36738
|
|
37
|
38610
|
|
38
|
39006
|
|
39
|
39102
|
|
40
|
40350
|
Table no.
3
|
41
|
40662
|
|
42
|
41538
|
|
43
|
42978
|
|
44
|
46002
|
|
45
|
47058
|
|
46
|
49662
|
|
47
|
52578
|
|
48
|
53118
|
|
49
|
53730
|
|
50
|
53790
|
|
51
|
55746
|
|
52
|
57150
|
|
53
|
57618
|
|
54
|
60258
|
|
55
|
60786
|
|
56
|
61182
|
|
57
|
61542
|
|
58
|
61938
|
|
59
|
62130
|
|
60
|
62622
|
Table no.
4
|
61
|
65538
|
|
62
|
67230
|
|
63
|
67938
|
|
64
|
69498
|
|
65
|
74898
|
|
66
|
76302
|
|
67
|
77250
|
|
68
|
78498
|
|
69
|
79422
|
|
70
|
79902
|
|
71
|
88506
|
|
72
|
88578
|
|
73
|
92202
|
|
74
|
93438
|
|
75
|
94302
|
|
76
|
96222
|
|
77
|
97902
|
|
78
|
102858
|
|
79
|
105378
|
|
80
|
106782
|
Table no.
5
|
81
|
107778
|
|
82
|
108834
|
|
83
|
112098
|
|
84
|
113202
|
|
85
|
113982
|
|
86
|
115182
|
|
87
|
117126
|
|
88
|
117234
|
|
89
|
118818
|
|
90
|
119538
|
|
91
|
120498
|
|
92
|
120990
|
|
93
|
122670
|
|
94
|
123006
|
|
95
|
124098
|
|
96
|
124542
|
|
97
|
128214
|
|
98
|
129582
|
|
99
|
131070
|
|
100
|
131238
|
Table no.
6
|
101
|
132354
|
|
102
|
132462
|
|
103
|
132498
|
|
104
|
137538
|
|
105
|
141858
|
|
106
|
143262
|
|
107
|
144450
|
|
108
|
145794
|
|
109
|
145962
|
|
110
|
149058
|
|
111
|
151230
|
|
112
|
151902
|
|
113
|
152658
|
|
114
|
153918
|
|
115
|
154926
|
|
116
|
160818
|
|
117
|
166518
|
|
118
|
168642
|
|
119
|
168870
|
|
120
|
174690
|
Table no.
7
|
121
|
182250
|
|
122
|
184830
|
|
123
|
185022
|
|
124
|
185742
|
|
125
|
188802
|
|
126
|
189198
|
|
127
|
189378
|
|
128
|
190302
|
|
129
|
191982
|
|
130
|
192738
|
|
131
|
193662
|
|
132
|
196098
|
|
133
|
197982
|
|
134
|
200382
|
|
135
|
203058
|
|
136
|
208290
|
|
137
|
208962
|
|
138
|
211482
|
|
139
|
214542
|
|
140
|
215514
|
Table no.
8
|
141
|
219102
|
|
142
|
221562
|
|
143
|
222222
|
|
144
|
225342
|
|
145
|
226182
|
|
146
|
230142
|
|
147
|
231198
|
|
148
|
232578
|
|
149
|
234498
|
|
150
|
236898
|
|
151
|
237690
|
|
152
|
239598
|
|
153
|
239778
|
|
154
|
243906
|
|
155
|
244902
|
|
156
|
245250
|
|
157
|
245502
|
|
158
|
247158
|
|
159
|
249858
|
|
160
|
251262
|
Table no.
9
|
161
|
264402
|
|
162
|
266814
|
|
163
|
268770
|
|
164
|
271458
|
|
165
|
275154
|
|
166
|
277506
|
|
167
|
281502
|
|
168
|
282438
|
|
169
|
285570
|
|
170
|
285822
|
|
171
|
295038
|
|
172
|
296322
|
|
173
|
297702
|
|
174
|
301182
|
|
175
|
307746
|
|
176
|
308178
|
|
177
|
308502
|
|
178
|
311298
|
|
179
|
311418
|
|
180
|
311982
|
Table no.
10
|
181
|
312702
|
|
182
|
315018
|
|
183
|
317502
|
|
184
|
318978
|
|
185
|
319902
|
|
186
|
323202
|
|
187
|
326118
|
|
188
|
326742
|
|
189
|
328302
|
|
190
|
329382
|
|
191
|
334098
|
|
192
|
335358
|
|
193
|
336258
|
|
194
|
341502
|
|
195
|
341850
|
|
196
|
344862
|
|
197
|
345462
|
|
198
|
348462
|
|
199
|
357858
|
|
200
|
359490
|
Table no.
11
|
201
|
359658
|
|
202
|
363690
|
|
203
|
366498
|
|
204
|
367722
|
|
205
|
367950
|
|
206
|
369798
|
|
207
|
371778
|
|
208
|
372222
|
|
209
|
372498
|
|
210
|
375498
|
|
211
|
377538
|
|
212
|
385530
|
|
213
|
388278
|
|
214
|
389298
|
|
215
|
392502
|
|
216
|
393822
|
|
217
|
397698
|
|
218
|
398466
|
|
219
|
403002
|
|
220
|
406782
|
Table no.
12
|
221
|
408702
|
|
222
|
409698
|
|
223
|
409950
|
|
224
|
414594
|
|
225
|
416670
|
|
226
|
421650
|
|
227
|
424578
|
|
228
|
426690
|
|
229
|
430782
|
|
230
|
431298
|
|
231
|
431730
|
|
232
|
432822
|
|
233
|
433134
|
|
234
|
433782
|
|
235
|
436158
|
|
236
|
440802
|
|
237
|
444222
|
|
238
|
448590
|
|
239
|
450738
|
|
240
|
458898
|
Table no.
13
|
241
|
460290
|
|
242
|
463218
|
|
243
|
466578
|
|
244
|
467742
|
|
245
|
474498
|
|
246
|
476502
|
|
247
|
481518
|
|
248
|
485298
|
|
249
|
489942
|
|
250
|
491202
|
|
251
|
491502
|
|
252
|
492882
|
|
253
|
493950
|
|
254
|
495234
|
|
255
|
497250
|
|
256
|
498762
|
|
257
|
499662
|
|
258
|
503622
|
|
259
|
504030
|
|
260
|
508662
|
Table no.
14
|
261
|
511938
|
|
262
|
512622
|
|
263
|
514098
|
|
264
|
517242
|
|
265
|
520830
|
|
266
|
522102
|
|
267
|
524898
|
|
268
|
526878
|
|
269
|
529230
|
|
270
|
530178
|
|
271
|
530658
|
|
272
|
531522
|
|
273
|
531918
|
|
274
|
533370
|
|
275
|
535302
|
|
276
|
535458
|
|
277
|
540498
|
|
278
|
540594
|
|
279
|
549822
|
|
280
|
552978
|
Table no.
15
|
281
|
560898
|
|
282
|
561090
|
|
283
|
561150
|
|
284
|
564450
|
|
285
|
568098
|
|
286
|
569502
|
|
287
|
575298
|
|
288
|
582822
|
|
289
|
583422
|
|
290
|
584166
|
|
291
|
585342
|
|
292
|
591330
|
|
293
|
600066
|
|
294
|
600402
|
|
295
|
604998
|
|
296
|
605022
|
|
297
|
605982
|
|
298
|
607290
|
|
299
|
608190
|
|
300
|
618462
|
Table no.
16
|
301
|
619554
|
|
302
|
620862
|
|
303
|
623502
|
|
304
|
623898
|
|
305
|
628938
|
|
306
|
630498
|
|
307
|
634338
|
|
308
|
637362
|
|
309
|
641058
|
|
310
|
648702
|
|
311
|
653718
|
|
312
|
656238
|
|
313
|
659934
|
|
314
|
663102
|
|
315
|
664578
|
|
316
|
668670
|
|
317
|
669942
|
|
318
|
670626
|
|
319
|
673218
|
|
320
|
674658
|
Table no.
17
|
321
|
676062
|
|
322
|
677502
|
|
323
|
680262
|
|
324
|
682722
|
|
325
|
689502
|
|
326
|
697818
|
|
327
|
699246
|
|
328
|
703890
|
|
329
|
707586
|
|
330
|
708318
|
|
331
|
710334
|
|
332
|
711282
|
|
333
|
714474
|
|
334
|
716898
|
|
335
|
727902
|
|
336
|
732450
|
|
337
|
734526
|
|
338
|
735642
|
|
339
|
747738
|
|
340
|
753102
|
Table no.
18
|
341
|
756702
|
|
342
|
759330
|
|
343
|
767142
|
|
344
|
776130
|
|
345
|
785538
|
|
346
|
786942
|
|
347
|
804078
|
|
348
|
804102
|
|
349
|
804750
|
|
350
|
808302
|
|
351
|
809562
|
|
352
|
816222
|
|
353
|
817518
|
|
354
|
819018
|
|
355
|
822558
|
|
356
|
839358
|
|
357
|
841698
|
|
358
|
842994
|
|
359
|
845502
|
|
360
|
848538
|
Table no.
19
|
361
|
850542
|
|
362
|
858702
|
|
363
|
860622
|
|
364
|
863298
|
|
365
|
872898
|
|
366
|
873630
|
|
367
|
874302
|
|
368
|
879282
|
|
369
|
882198
|
|
370
|
883710
|
|
371
|
895698
|
|
372
|
902970
|
|
373
|
903810
|
|
374
|
907902
|
|
375
|
910530
|
|
376
|
910938
|
|
377
|
912270
|
|
378
|
919338
|
|
379
|
919998
|
|
380
|
930690
|
Table no.
20
|
381
|
932202
|
|
382
|
933042
|
|
383
|
943542
|
|
384
|
944526
|
|
385
|
947718
|
|
386
|
948738
|
|
387
|
960258
|
|
388
|
964062
|
|
389
|
967302
|
|
390
|
968418
|
|
391
|
970002
|
|
392
|
979902
|
|
393
|
980478
|
|
394
|
981090
|
|
395
|
988038
|
|
396
|
989298
|
|
397
|
992682
|
|
398
|
995598
|
(Giuseppe Melfi - melfi@dm.unipi.it)
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