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

Offset: 1

Author

Paolo P. Lava, Jan 08 2025

Keywords

• nonn
• easy
• base

Comments

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

Examples

			p = 13 -> q = 73 because 1/73 = 0.01369863…
p = 83 -> q = 1193 because 1/1193 = 0,0008382229…
		

Crossrefs

Cf. A099406.