A267720 - cp's OEIS frontend

A267720 The smallest prime number formed by the concatenation of consecutive powers of n beginning with 1^0 = "1," and ending with a trailing "1" - or "0," if no such prime number exists.

n	a(n)
2	0
3	131
4	1416641
5	151
6	16361
7	17491
8	181
9	191
10	0
11	1111211
12	11214417282073624883229859841
13	0
14	11419627441
15	1151
16	1162564096655361048576167772162684354564294967296687194767361099511627776175921860444161
17	1171
18	1181
19	11936168591
20	1201

[0, 131, 1416641, 151, 16361, 17491, 181, 191, 0, 1111211, 11214417282073624883229859841, 0, 11419627441, 1151, 1162564096655361048576167772162684354564294967296687194767361099511627776175921860444161, 1171, 1181, 11936168591, 1201]

cp's OEIS Frontend

A267720 The smallest prime number formed by the concatenation of consecutive powers of n beginning with 1^0 = "1," and ending with a trailing "1" - or "0," if no such prime number exists.

Table of values

List of values