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A193825 Primes of the form 10^n-prime(n). 1
97, 99989, 9999999999999999999999999999999999999827, 999999999999999999999999999999999999999999999999999999999999999999653 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Next term (n=586) is too large to be listed above. See A110066 for the numbers n which yield further terms of this sequence.

LINKS

Table of n, a(n) for n=1..4.

FORMULA

a(n)=10^A110066(n)-prime(A110066(n)).

PROG

(PARI) for(n=1, 999, ispseudoprime(t=10^n-prime(n)) && print1(t", "))

CROSSREFS

Cf. A110065, A110066, A110067, A173837, A174176.

Sequence in context: A176135 A160489 A220982 * A209475 A186167 A322606

Adjacent sequences:  A193822 A193823 A193824 * A193826 A193827 A193828

KEYWORD

nonn

AUTHOR

M. F. Hasler, Aug 06 2011

STATUS

approved

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Last modified February 23 08:18 EST 2019. Contains 320420 sequences. (Running on oeis4.)