A223934 - cp's OEIS frontend

A223934 Least prime p such that x^n-x-1 is irreducible modulo p.

n	a(n)
2	2
3	2
4	2
5	3
6	2
7	2
8	7
9	2
10	17
11	7
12	5
13	3
14	3
15	2
16	109
17	3
18	101
19	19
20	229
21	5
22	2
23	23
24	23
25	17
26	107
27	269
28	2
29	29
30	2
31	31
32	37
33	197
34	107
35	73
36	37
37	7
38	59
39	233
40	3
41	3
42	7
43	43
44	43
45	5
46	2
47	47
48	269
49	61
50	43
51	3
52	53
53	13
54	3
55	643
56	13
57	5
58	151
59	59
60	2

[2, 2, 2, 3, 2, 2, 7, 2, 17, 7, 5, 3, 3, 2, 109, 3, 101, 19, 229, 5, 2, 23, 23, 17, 107, 269, 2, 29, 2, 31, 37, 197, 107, 73, 37, 7, 59, 233, 3, 3, 7, 43, 43, 5, 2, 47, 269, 61, 43, 3, 53, 13, 3, 643, 13, 5, 151, 59, 2]

cp's OEIS Frontend

A223934 Least prime p such that x^n-x-1 is irreducible modulo p.

Table of values

List of values

n	a(n)
2	2
3	2
4	2
5	3
6	2
7	2
8	7
9	2
10	17
11	7
12	5
13	3
14	3
15	2
16	109
17	3
18	101
19	19
20	229
21	5
22	2
23	23
24	23
25	17
26	107
27	269
28	2
29	29
30	2
31	31
32	37
33	197
34	107
35	73
36	37
37	7
38	59
39	233
40	3
41	3
42	7
43	43
44	43
45	5
46	2
47	47
48	269
49	61
50	43
51	3
52	53
53	13
54	3
55	643
56	13
57	5
58	151
59	59
60	2

n	a(n)
2	2
3	2
4	2
5	3
6	2
7	2
8	7
9	2
10	17
11	7
12	5
13	3
14	3
15	2
16	109
17	3
18	101
19	19
20	229
21	5
22	2
23	23
24	23
25	17
26	107
27	269
28	2
29	29
30	2
31	31
32	37
33	197
34	107
35	73
36	37
37	7
38	59
39	233
40	3
41	3
42	7
43	43
44	43
45	5
46	2
47	47
48	269
49	61
50	43
51	3
52	53
53	13
54	3
55	643
56	13
57	5
58	151
59	59
60	2

n	a(n)
2	2
3	2
4	2
5	3
6	2
7	2
8	7
9	2
10	17
11	7
12	5
13	3
14	3
15	2
16	109
17	3
18	101
19	19
20	229
21	5
22	2
23	23
24	23
25	17
26	107
27	269
28	2
29	29
30	2
31	31
32	37
33	197
34	107
35	73
36	37
37	7
38	59
39	233
40	3
41	3
42	7
43	43
44	43
45	5
46	2
47	47
48	269
49	61
50	43
51	3
52	53
53	13
54	3
55	643
56	13
57	5
58	151
59	59
60	2