A384793 a(n) is the start of the first occurrence of exactly n consecutive zeroless primes (A038618).

461717, 162119, 75431, 81421, 19661, 5923, 4813, 1319, 2917, 1117, 1721, 521, 911, 613, 311, 11519, 25411, 7321, 7717, 8819, 9413, 5519, 9613, 2311, 2, 41213, 16319, 1423, 21121, 8219, 162221, 71233, 113, 68521, 148627, 192611, 86531, 48413, 269219, 13313, 275521, 11113, 111521

Offset: 1

Author

Hugo Pfoertner, based on an idea by René-Louis Clerc, Jun 20 2025

Keywords

• nonn
• base

Examples

			a(25) = 2 because the 25 primes 2, 3, ..., 97 don't have a zero in their decimal representation, terminated by 101.
a(1) = 461717 because it is the smallest zeroless prime, whose nearest lower and upper prime neighbors 461707 and 461801 both have at least one zero in their decimal representation.
		

Links

• Hugo Pfoertner, Table of n, a(n) for n = 1..95
• René-Louis Clerc, Nombres premiers primaires et nombres premiers secondaires , 2025.
• Hugo Pfoertner, Table of terms up to n=110, including the unknown terms, Jun 28 2025.

Crossrefs

Cf. A038618, A052382, A384794.