A172374 The first number generating n primes through the concatenation of numbers increasing in minimal increments in the quickest way.

2, 278, 1826, 4498070, 2645182700

Offset

1,1

Comments

Analogous to A152396 with increments replacing decrements.

Links

Table of n, a(n) for n=1..5.

Example

278279 and 278279280281 are prime and no number <278 gives primes when treated similarly. Concatenation of 2, 4, 8, 10, and 14 numbers give primes beginning with 2645182700.

Crossrefs

A152396

Sequence in context: A215043 A119553 A093938 * A231041 A080296 A260331

Adjacent sequences: A172371 A172372 A172373 * A172375 A172376 A172377

Keyword

base,nonn

Author

James G. Merickel, Feb 01 2010

Status

approved