A086000 - cp's OEIS frontend

A086000 For p = prime(n), a(n) is the smallest N such that pN is a base-2 pseudoprime (that is, 2^(pN-1) = 1 mod pN).

n	a(n)
2	187
3	129
4	247
5	31
6	85
7	33
8	73
9	89
10	85
11	11
12	73
13	161
14	15
15	93
16	157
17	233
18	481
19	133
20	281
21	19
22	391
23	1067
24	23
25	193
26	601
27	307
28	6361
29	37
30	29
31	15
32	2731
33	545
34	10213
35	593
36	31
37	53
38	2593
39	499
40	1205
41	141155
42	1261
43	2281
44	97
45	3333
46	1387
47	1891
48	1777
49	3391
50	381
51	59
52	20231
53	97

[187, 129, 247, 31, 85, 33, 73, 89, 85, 11, 73, 161, 15, 93, 157, 233, 481, 133, 281, 19, 391, 1067, 23, 193, 601, 307, 6361, 37, 29, 15, 2731, 545, 10213, 593, 31, 53, 2593, 499, 1205, 141155, 1261, 2281, 97, 3333, 1387, 1891, 1777, 3391, 381, 59, 20231, 97]

cp's OEIS Frontend

A086000 For p = prime(n), a(n) is the smallest N such that pN is a base-2 pseudoprime (that is, 2^(pN-1) = 1 mod pN).

Table of values

List of values