A187553 - cp's OEIS frontend

A187553 Smallest prime p such that the sum of the squares of the digits of p equals n (or 0 if no such prime exists).

n	a(n)
1	0
2	11
3	0
4	2
5	101111
6	211
7	2111
8	101111111
9	3
10	13
11	113
12	112121
13	23
14	21221
15	1123
16	11213
17	41
18	1223
19	313
20	10133
21	241
22	233
23	112223
24	21313
25	5
26	431
27	151
28	1151
29	13313
30	251
31	2333
32	11251
33	2243
34	53
35	1433
36	1153
37	61
38	523
39	1523
40	11161
41	443
42	541
43	353
44	33413
45	2621
46	163
47	1163
48	13523
49	7
50	17

[0, 11, 0, 2, 101111, 211, 2111, 101111111, 3, 13, 113, 112121, 23, 21221, 1123, 11213, 41, 1223, 313, 10133, 241, 233, 112223, 21313, 5, 431, 151, 1151, 13313, 251, 2333, 11251, 2243, 53, 1433, 1153, 61, 523, 1523, 11161, 443, 541, 353, 33413, 2621, 163, 1163, 13523, 7, 17]

cp's OEIS Frontend

A187553 Smallest prime p such that the sum of the squares of the digits of p equals n (or 0 if no such prime exists).

Table of values

List of values