cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

A145344 a(n) = smallest prime >= the smallest positive integer with exactly n divisors.

Table of values

n a(n)
1 2
2 2
3 5
4 7
5 17
6 13
7 67
8 29
9 37
10 53
11 1031
12 61
13 4099
14 193
15 149
16 127
17 65537
18 181
19 262147
20 241
21 577
22 3079
23 4194319
24 367
25 1297
26 12289
27 907
28 967
29 268435459
30 727
31 1073741827
32 853
33 9221
34 196613
35 5189
36 1277
37 68719476767
38 786433
39 36871
40 1693
41 1099511627791

List of values

[2, 2, 5, 7, 17, 13, 67, 29, 37, 53, 1031, 61, 4099, 193, 149, 127, 65537, 181, 262147, 241, 577, 3079, 4194319, 367, 1297, 12289, 907, 967, 268435459, 727, 1073741827, 853, 9221, 196613, 5189, 1277, 68719476767, 786433, 36871, 1693, 1099511627791]

Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

Content is available under The OEIS End-User License Agreement.