Twin practical numbers
A pair of twin practical numbers is a pair (m, m+2) of
numbers both practicals. This list shows hundreds of numbres m
such that m+2 is practical.
Table no. 1
| 1 |
2 |
|
2
|
4
|
|
3
|
6
|
|
4
|
16
|
|
5
|
18
|
|
6
|
28
|
|
7
|
30
|
|
8
|
40
|
|
9
|
54
|
|
10
|
64
|
|
11
|
78
|
|
12
|
88
|
|
13
|
126
|
|
14
|
160
|
|
15
|
196
|
|
16
|
198
|
|
17
|
208
|
|
18
|
270
|
|
19
|
304
|
|
20
|
306
|
Table no.
2
|
21
|
340
|
|
22
|
378
|
|
23
|
390
|
|
24
|
414
|
|
25
|
448
|
|
26
|
460
|
|
27
|
462
|
|
28
|
510
|
|
29
|
520
|
|
30
|
544
|
|
31
|
558
|
|
32
|
700
|
|
33
|
702
|
|
34
|
726
|
|
35
|
798
|
|
36
|
810
|
|
37
|
858
|
|
38
|
868
|
|
39
|
880
|
|
40
|
918
|
Table no.
3
|
41
|
928
|
|
42
|
966
|
|
43
|
990
|
|
44
|
1024
|
|
45
|
1120
|
|
46
|
1216
|
|
47
|
1230
|
|
48
|
1240
|
|
49
|
1288
|
|
50
|
1300
|
|
51
|
1350
|
|
52
|
1408
|
|
53
|
1456
|
|
54
|
1470
|
|
55
|
1480
|
|
56
|
1482
|
|
57
|
1518
|
|
58
|
1566
|
|
59
|
1638
|
|
60
|
1672
|
Table no.
4
|
61
|
1720
|
|
62
|
1768
|
|
63
|
1792
|
|
64
|
1888
|
|
65
|
1950
|
|
66
|
1974
|
|
67
|
1998
|
|
68
|
2046
|
|
69
|
2070
|
|
70
|
2128
|
|
71
|
2176
|
|
72
|
2320
|
|
73
|
2392
|
|
74
|
2418
|
|
75
|
2430
|
|
76
|
2440
|
|
77
|
2478
|
|
78
|
2548
|
|
79
|
2550
|
|
80
|
2560
|
Table no.
5
|
81
|
2574
|
|
82
|
2704
|
|
83
|
2728
|
|
84
|
2752
|
|
85
|
2814
|
|
86
|
2838
|
|
87
|
2860
|
|
88
|
2898
|
|
89
|
2968
|
|
90
|
3040
|
|
91
|
3078
|
|
92
|
3100
|
|
93
|
3198
|
|
94
|
3318
|
|
95
|
3328
|
|
96
|
3330
|
|
97
|
3400
|
|
98
|
3498
|
|
99
|
3724
|
|
100
|
3738
|
Table no.
6
|
101
|
3750
|
|
102
|
3760
|
|
103
|
3870
|
|
104
|
3904
|
|
105
|
3976
|
|
106
|
4048
|
|
107
|
4134
|
|
108
|
4158
|
|
109
|
4264
|
|
110
|
4288
|
|
111
|
4350
|
|
112
|
4420
|
|
113
|
4422
|
|
114
|
4480
|
|
115
|
4590
|
|
116
|
4600
|
|
117
|
4648
|
|
118
|
4662
|
|
119
|
4698
|
|
120
|
4758
|
Table no.
7
|
121
|
4816
|
|
122
|
4998
|
|
123
|
5166
|
|
124
|
5200
|
|
125
|
5236
|
|
126
|
5248
|
|
127
|
5310
|
|
128
|
5454
|
|
129
|
5488
|
|
130
|
5694
|
|
131
|
5740
|
|
132
|
5776
|
|
133
|
5778
|
|
134
|
5850
|
|
135
|
5886
|
|
136
|
5920
|
|
137
|
5992
|
|
138
|
6030
|
|
139
|
6100
|
|
140
|
6102
|
Table no.
8
|
141
|
6136
|
|
142
|
6160
|
|
143
|
6208
|
|
144
|
6270
|
|
145
|
6318
|
|
146
|
6400
|
|
147
|
6424
|
|
148
|
6448
|
|
149
|
6496
|
|
150
|
6498
|
|
151
|
6510
|
|
152
|
6640
|
|
153
|
6664
|
|
154
|
6760
|
|
155
|
6784
|
|
156
|
6798
|
|
157
|
6942
|
|
158
|
6966
|
|
159
|
7038
|
|
160
|
7098
|
Table no.
9
|
161
|
7252
|
|
162
|
7566
|
|
163
|
7590
|
|
164
|
7614
|
|
165
|
7830
|
|
166
|
7936
|
|
167
|
7950
|
|
168
|
8008
|
|
169
|
8034
|
|
170
|
8118
|
|
171
|
8190
|
|
172
|
8260
|
|
173
|
8370
|
|
174
|
8500
|
|
175
|
8512
|
|
176
|
8526
|
|
177
|
8814
|
|
178
|
8848
|
|
179
|
8944
|
|
180
|
9040
|
Table no.
10
|
181
|
9042
|
|
182
|
9088
|
|
183
|
9150
|
|
184
|
9198
|
|
185
|
9280
|
|
186
|
9438
|
|
187
|
9520
|
|
188
|
9568
|
|
189
|
9592
|
|
190
|
9630
|
|
191
|
9700
|
|
192
|
9880
|
|
193
|
9918
|
|
194
|
10062
|
|
195
|
10098
|
|
196
|
10206
|
|
197
|
10218
|
|
198
|
10494
|
|
199
|
10528
|
|
200
|
10600
|
Table no.
11
|
201
|
10624
|
|
202
|
10648
|
|
203
|
10710
|
|
204
|
10878
|
|
205
|
10948
|
|
206
|
10960
|
|
207
|
10998
|
|
208
|
11128
|
|
209
|
11152
|
|
210
|
11176
|
|
211
|
11178
|
|
212
|
11248
|
|
213
|
11284
|
|
214
|
11310
|
|
215
|
11500
|
|
216
|
11550
|
|
217
|
11620
|
|
218
|
11680
|
|
219
|
11776
|
|
220
|
11778
|
Table no.
12
|
221
|
11790
|
|
222
|
11968
|
|
223
|
12054
|
|
224
|
12078
|
|
225
|
12150
|
|
226
|
12208
|
|
227
|
12220
|
|
228
|
12400
|
|
229
|
12510
|
|
230
|
12544
|
|
231
|
12558
|
|
232
|
12640
|
|
233
|
12654
|
|
234
|
12688
|
|
235
|
12798
|
|
236
|
12978
|
|
237
|
13024
|
|
238
|
13110
|
|
239
|
13120
|
|
240
|
13158
|
Table no.
13
|
241
|
13182
|
|
242
|
13338
|
|
243
|
13398
|
|
244
|
13566
|
|
245
|
13662
|
|
246
|
13804
|
|
247
|
13816
|
|
248
|
13950
|
|
249
|
13984
|
|
250
|
14058
|
|
251
|
14238
|
|
252
|
14248
|
|
253
|
14308
|
|
254
|
14320
|
|
255
|
14382
|
|
256
|
14416
|
|
257
|
14418
|
|
258
|
14430
|
|
259
|
14454
|
|
260
|
14670
|
Table no.
14
|
261
|
14740
|
|
262
|
14848
|
|
263
|
15136
|
|
264
|
15390
|
|
265
|
15496
|
|
266
|
15498
|
|
267
|
15568
|
|
268
|
15580
|
|
269
|
15640
|
|
270
|
15678
|
|
271
|
15750
|
|
272
|
15808
|
|
273
|
15870
|
|
274
|
15928
|
|
275
|
16000
|
|
276
|
16048
|
|
277
|
16072
|
|
278
|
16110
|
|
279
|
16182
|
|
280
|
16254
|
Table no.
15
|
281
|
16300
|
|
282
|
16350
|
|
283
|
16432
|
|
284
|
16590
|
|
285
|
16686
|
|
286
|
16698
|
|
287
|
16768
|
|
288
|
16926
|
|
289
|
16950
|
|
290
|
17080
|
|
291
|
17248
|
|
292
|
17262
|
|
293
|
17296
|
|
294
|
17298
|
|
295
|
17368
|
|
296
|
17440
|
|
297
|
17442
|
|
298
|
17800
|
|
299
|
17934
|
|
300
|
17980
|
Table no.
16
|
301
|
18018
|
|
302
|
18088
|
|
303
|
18126
|
|
304
|
18304
|
|
305
|
18352
|
|
306
|
18688
|
|
307
|
18942
|
|
308
|
19024
|
|
309
|
19072
|
|
310
|
19206
|
|
311
|
19264
|
|
312
|
19312
|
|
313
|
19456
|
|
314
|
19458
|
|
315
|
19600
|
|
316
|
19698
|
|
317
|
19710
|
|
318
|
19780
|
|
319
|
19864
|
|
320
|
19888
|
Table no.
17
|
321
|
19950
|
|
322
|
19998
|
|
323
|
20070
|
|
324
|
20128
|
|
325
|
20176
|
|
326
|
20200
|
|
327
|
20368
|
|
328
|
20500
|
|
329
|
20538
|
|
330
|
20608
|
|
331
|
20670
|
|
332
|
20860
|
|
333
|
20862
|
|
334
|
20898
|
|
335
|
20970
|
|
336
|
21054
|
|
337
|
21112
|
|
338
|
21294
|
|
339
|
21318
|
|
340
|
21328
|
Table no.
18
|
341
|
21390
|
|
342
|
21400
|
|
343
|
21460
|
|
344
|
21580
|
|
345
|
21582
|
|
346
|
21630
|
|
347
|
21712
|
|
348
|
21726
|
|
349
|
21760
|
|
350
|
21798
|
|
351
|
21868
|
|
352
|
21942
|
|
353
|
21978
|
|
354
|
22048
|
|
355
|
22192
|
|
356
|
22218
|
|
357
|
22302
|
|
358
|
22350
|
|
359
|
22372
|
|
360
|
22446
|
Table no.
19
|
361
|
22540
|
|
362
|
22876
|
|
363
|
22878
|
|
364
|
22912
|
|
365
|
23056
|
|
366
|
23140
|
|
367
|
23166
|
|
368
|
23310
|
|
369
|
23320
|
|
370
|
23322
|
|
371
|
23548
|
|
372
|
23550
|
|
373
|
23560
|
|
374
|
23598
|
|
375
|
23632
|
|
376
|
23826
|
|
377
|
23968
|
|
378
|
24064
|
|
379
|
24138
|
|
380
|
24318
|
Table no.
20
|
381
|
24400
|
|
382
|
24448
|
|
383
|
24462
|
|
384
|
24640
|
|
385
|
24750
|
|
386
|
24820
|
|
387
|
24990
|
|
388
|
25228
|
|
389
|
25230
|
|
390
|
25254
|
|
391
|
25398
|
|
392
|
25432
|
|
393
|
25648
|
|
394
|
25758
|
|
395
|
26068
|
|
396
|
26080
|
|
397
|
26128
|
|
398
|
26224
|
|
399
|
26404
|
|
400
|
26416
|
Table no.
21
|
401
|
26598
|
|
402
|
26620
|
|
403
|
26622
|
|
404
|
26752
|
|
405
|
26838
|
|
406
|
26850
|
|
407
|
26860
|
|
408
|
26862
|
|
409
|
26908
|
|
410
|
26910
|
|
411
|
27018
|
|
412
|
27054
|
|
413
|
27232
|
|
414
|
27258
|
|
415
|
27376
|
|
416
|
27378
|
|
417
|
27390
|
|
418
|
27520
|
|
419
|
27664
|
|
420
|
27690
|
Table no.
22
|
421
|
27738
|
|
422
|
27808
|
|
423
|
28014
|
|
424
|
28026
|
|
425
|
28158
|
|
426
|
28288
|
|
427
|
28518
|
|
428
|
28600
|
|
429
|
28638
|
|
430
|
28672
|
(Giuseppe Melfi - melfi@dm.unipi.it)
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