A232235 - cp's OEIS frontend

A232235 Primes that can be written in binary representation as concatenation of two primes: p and p-2. That is, primes representable as p * 2^L + p-2, where p and p-2 are primes, and L is the length of binary representation of p-2: L = A070939(p-2).

n	a(n)
1	23
2	61
3	1021
4	139021
5	145177
6	222127
7	2645257
8	2706727
9	2928019
10	3050959
11	3997597
12	38695537
13	45086077
14	49903561
15	50247667
16	53688727
17	56294101
18	545636617
19	556450387
20	558023299
21	563331877
22	563921719
23	581616979
24	582993277
25	607570027
26	619956709
27	638045197
28	660262579

[23, 61, 1021, 139021, 145177, 222127, 2645257, 2706727, 2928019, 3050959, 3997597, 38695537, 45086077, 49903561, 50247667, 53688727, 56294101, 545636617, 556450387, 558023299, 563331877, 563921719, 581616979, 582993277, 607570027, 619956709, 638045197, 660262579]

cp's OEIS Frontend

A232235 Primes that can be written in binary representation as concatenation of two primes: p and p-2. That is, primes representable as p * 2^L + p-2, where p and p-2 are primes, and L is the length of binary representation of p-2: L = A070939(p-2).

Table of values

List of values