A111437 - OEIS

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A111437

Least multiple of n such that every partial concatenation followed by a 3 is prime.

0

1, 6, 6, 36, 30, 60, 105, 120, 207, 40, 33, 24, 104, 1246, 285, 192, 476, 450, 228, 100, 294, 660, 483, 2232, 3275, 3120, 2025, 1876, 2204, 1590, 4557, 2560, 2574, 680, 6160, 432, 444, 5814, 7371, 2520, 1230, 2772, 6536, 103708, 4815, 1886, 11374, 1392, 5390

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OFFSET

1,2

LINKS

Table of n, a(n) for n=1..49.

EXAMPLE

13,163,1663,166363,... etc. are all prime.

CROSSREFS

Sequence in context: A244416 A165827 A256136 * A056464 A056454 A056452

Adjacent sequences: A111434 A111435 A111436 * A111438 A111439 A111440

KEYWORD

base,nonn

AUTHOR

Amarnath Murthy, Aug 03 2005

EXTENSIONS

More terms from David Wasserman, Jan 09 2009

STATUS

approved