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A099192 Numbers n such that the string n235711131719 is prime. 2
5, 12, 20, 23, 30, 32, 38, 39, 57, 62, 65, 66, 72, 108, 117, 120, 123, 141, 143, 144, 170, 176, 194, 198, 207, 215, 221, 225, 240, 255, 269, 293, 297, 305, 309, 320, 321, 324, 426, 446, 458, 471, 480, 488 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Also numbers such that (10^12*n + 235711131719) is prime. - Stefan Steinerberger, Feb 15 2006

LINKS

Daniel Starodubtsev, Table of n, a(n) for n = 1..10000

EXAMPLE

If n=5, then n235711131719 = 5235711131719 (prime).

If n=38, then n235711131719 = 38235711131719 (prime).

If n=72, then n235711131719 = 72235711131719 (prime).

MATHEMATICA

For[n = 1, n < 500, n++, If[PrimeQ[10^12*n + 235711131719], Print[n]]] (* Stefan Steinerberger, Feb 15 2006 *)

PROG

(PARI) ok(n)={isprime(n*10^12+235711131719)} \\ Andrew Howroyd, Jan 23 2020

CROSSREFS

Sequence in context: A043413 A017041 A139692 * A047077 A326663 A086570

Adjacent sequences:  A099189 A099190 A099191 * A099193 A099194 A099195

KEYWORD

base,nonn

AUTHOR

Parthasarathy Nambi, Mar 23 2005

EXTENSIONS

More terms from Stefan Steinerberger, Feb 15 2006

a(17) corrected by Daniel Starodubtsev, Jan 22 2020

STATUS

approved

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Last modified February 26 14:18 EST 2021. Contains 341632 sequences. (Running on oeis4.)