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A233385 Primes that are a concatenations of n-th Mersenne exponent and n-th Mersenne prime. 0
23, 37, 7127, 138191, 19524287 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

Primes of the form A000043(n)*10^A028335(n) + A000668(n).

LINKS

Table of n, a(n) for n=1..5.

EXAMPLE

a(4) is 138191(prime number) where 13 is 5th Mersenne exponent and 8191 is 5th Mersenne prime.

CROSSREFS

Cf. A000043, A000668, A028335.

Sequence in context: A089782 A113893 A146390 * A282712 A134754 A134755

Adjacent sequences:  A233382 A233383 A233384 * A233386 A233387 A233388

KEYWORD

nonn,base,less

AUTHOR

Juri-Stepan Gerasimov, Dec 08 2013

STATUS

approved

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Last modified January 28 13:24 EST 2020. Contains 331321 sequences. (Running on oeis4.)