A227922 - cp's OEIS frontend

A227922 Numbers whose digits are prime and which retain this property when multiplied by some 1-digit prime (i.e., one of 2, 3, 5 or 7).

n	a(n)
1	5
2	7
3	25
4	55
5	75
6	325
7	555
8	755
9	775
10	2525
11	2575
12	3225
13	3325
14	5325
15	5555
16	7525
17	7555
18	7575
19	7775
20	25775
21	32225
22	33225
23	33325
24	53225
25	53325
26	55555
27	75325
28	75555
29	75775
30	77525
31	77575
32	77775

[5, 7, 25, 55, 75, 325, 555, 755, 775, 2525, 2575, 3225, 3325, 5325, 5555, 7525, 7555, 7575, 7775, 25775, 32225, 33225, 33325, 53225, 53325, 55555, 75325, 75555, 75775, 77525, 77575, 77775]

cp's OEIS Frontend

A227922 Numbers whose digits are prime and which retain this property when multiplied by some 1-digit prime (i.e., one of 2, 3, 5 or 7).

Table of values

List of values