A377470 - OEIS

A377470

For any prime p, sequence gives the least prime q such that decimal part of 1/q starts with p, leading zeros excluded.

5, 3, 2, 13, 89, 73, 557, 503, 43, 337, 313, 269, 239, 23, 211, 1861, 167, 163, 149, 139, 1361, 1259, 1193, 1117, 103, 983, 97, 929, 911, 881, 787, 761, 727, 719, 67, 659, 6337, 61, 5953, 577, 557, 5501, 521, 5167, 5051, 5003, 4721, 4481, 439, 4349, 4283, 4177

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OFFSET

1,1

COMMENTS

If A099406(n) is prime then a(n) = A099406(n), otherwise a(n) > A099406(n). - Michel Marcus, Jan 08 2025

LINKS

Table of n, a(n) for n=1..52.

EXAMPLE

p = 13 -> q = 73 because 1/73 = 0.01369863...

p = 83 -> q = 1193 because 1/1193 = 0.0008382229...

CROSSREFS

Cf. A099406.