A054258 - cp's OEIS frontend

A054258 Concatenation of n in base 2 up to base 10 and n in base 10 down to base 2 is prime, all numbers are interpreted as decimals.

n	a(n)
1	2607
2	4007
3	4069
4	7597
5	12411
6	13583
7	23041
8	31113
9	32619
10	46187
11	48469
12	55777
13	61411
14	64387
15	71143
16	73837
17	84761
18	103559
19	123797
20	124043
21	126613
22	136509
23	142019
24	147449
25	183981
26	186889
27	200183
28	204219
29	214819
30	221101
31	224123
32	230977
33	235493
34	249049
35	256489

[2607, 4007, 4069, 7597, 12411, 13583, 23041, 31113, 32619, 46187, 48469, 55777, 61411, 64387, 71143, 73837, 84761, 103559, 123797, 124043, 126613, 136509, 142019, 147449, 183981, 186889, 200183, 204219, 214819, 221101, 224123, 230977, 235493, 249049, 256489]

cp's OEIS Frontend

A054258 Concatenation of n in base 2 up to base 10 and n in base 10 down to base 2 is prime, all numbers are interpreted as decimals.

Table of values

List of values