A085999 - cp's OEIS frontend

A085999 For p = prime(n), a(n) is the smallest base-2 pseudoprime N (that is, 2^(N-1) = 1 mod N) such that p divides N.

n	a(n)
2	561
3	645
4	1729
5	341
6	1105
7	561
8	1387
9	2047
10	2465
11	341
12	2701
13	6601
14	645
15	4371
16	8321
17	13747
18	29341
19	8911
20	19951
21	1387
22	30889
23	88561
24	2047
25	18721
26	60701
27	31621
28	680627
29	4033
30	3277
31	1905
32	357761
33	74665
34	1419607
35	88357
36	4681
37	8321
38	422659
39	83333

[561, 645, 1729, 341, 1105, 561, 1387, 2047, 2465, 341, 2701, 6601, 645, 4371, 8321, 13747, 29341, 8911, 19951, 1387, 30889, 88561, 2047, 18721, 60701, 31621, 680627, 4033, 3277, 1905, 357761, 74665, 1419607, 88357, 4681, 8321, 422659, 83333]

cp's OEIS Frontend

A085999 For p = prime(n), a(n) is the smallest base-2 pseudoprime N (that is, 2^(N-1) = 1 mod N) such that p divides N.

Table of values

List of values