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A104323 Primes which are the reverse concatenation of four consecutive numbers. 1
10987, 22212019, 86858483, 94939291, 100999897, 106105104103, 112111110109, 122121120119, 124123122121, 146145144143, 184183182181, 226225224223, 232231230229, 244243242241, 274273272271, 332331330329, 362361360359 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Zak Seidov, Table of n, a(n) for n = 1..328

EXAMPLE

The first term is 10987 which is a prime and is the reverse concatenation of 7,8,9 and 10 which are four consecutive numbers.

PROG

(PARI) forstep(n=10, 400, 2, isprime(t=eval(Str(n, n-1, n-2, n-3)))&print1(t", ")) \\ Zak Seidov, May 08 2013

CROSSREFS

Cf. A052089.

Sequence in context: A124668 A270148 A270115 * A252039 A252033 A266983

Adjacent sequences:  A104320 A104321 A104322 * A104324 A104325 A104326

KEYWORD

base,nonn

AUTHOR

Shyam Sunder Gupta, Apr 17 2005

STATUS

approved

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Last modified October 20 17:39 EDT 2017. Contains 293648 sequences.