A124991 - cp's OEIS frontend

A124991 Primes of the form 10k+1 generated recursively. Initial prime is 11. General term is a(n)=Min {p is prime; p divides (R^5 - 1)/(R - 1); Mod[p,5]=1}, where Q is the product of previous terms in the sequence and R = 5Q.

n	a(n)
1	11
2	211
3	1031
4	22741
5	41
6	15487770335331184216023237599647357572461782407557681
7	311
8	61
9	55172461
10	3541
11	1381
12	2851
13	19841
14	151
15	9033671
16	456802301
17	1720715817015281
18	19001
19	71

[11, 211, 1031, 22741, 41, 15487770335331184216023237599647357572461782407557681, 311, 61, 55172461, 3541, 1381, 2851, 19841, 151, 9033671, 456802301, 1720715817015281, 19001, 71]

cp's OEIS Frontend

A124991 Primes of the form 10k+1 generated recursively. Initial prime is 11. General term is a(n)=Min {p is prime; p divides (R^5 - 1)/(R - 1); Mod[p,5]=1}, where Q is the product of previous terms in the sequence and R = 5Q.

Table of values

List of values