A103409 Numbers n such that n2357 is prime.

0, 9, 14, 17, 20, 23, 24, 35, 36, 38, 56, 57, 59, 65, 66, 71, 80, 89, 90, 92, 93, 99, 104, 114, 119, 125, 132, 141, 143, 149, 152, 156, 189, 191, 203, 204, 215, 227, 234, 243, 245, 252, 255, 258, 264, 267, 273, 275, 279, 281, 290, 293, 303, 311, 314, 317, 332, 344, 357, 362, 365

Offset

1,2

Links

Robert Israel, Table of n, a(n) for n = 1..10000

Example

n=56 is in the sequence because n2357 = 562357 is prime.
n=99 is in the sequence because n2357 = 992357 is prime.

Maple

select(t -> isprime(10000*t+2357), [$0..1000]); # Robert Israel, May 18 2017

Prog

(Magma) [ n: n in [1..700] | IsPrime(Seqint([7, 5, 3, 2] cat Intseq(n))) ]; // Vincenzo Librandi, Feb 03 2011 (misses the zero)

Crossrefs

Sequence in context: A036266 A087722 A217005 * A011767 A305092 A205690

Adjacent sequences: A103406 A103407 A103408 * A103410 A103411 A103412

Keyword

base,nonn

Author

Parthasarathy Nambi, Mar 20 2005

Status

approved