A227529 - OEIS

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A227529

Copeland-Erdős constant primes (concatenation of entries (digits) of A033308 is prime).

2, 23, 2357, 23571113171 (list; graph; refs; listen; history; text; internal format)

	OFFSET	`1,1`
	COMMENTS	`Primes obtained by taking consecutive decimal digits (starting with the first) of the Copeland-Erdős constant.` `The next terms are too big to display: a(5) = 235711131...6917017097 (353 digits), a(6) = 235711131...1701709719 (355 digits), ...` `See A227530 for an equivalent but more compact way of listing the terms, namely, by giving the number of digits of the constant A033308 that must be taken to get a prime. - M. F. Hasler, Apr 24 2017`
	LINKS	`Eric W. Weisstein, Table of n, a(n) for n = 1..7` `Hans Havermann and Eric W. Weisstein (first 11 terms), Table of n, a(n) for n = 1..14` `Eric Weisstein's World of Mathematics, Copeland-Erdős Constant`
	CROSSREFS	`Cf. A227530 (number of decimal digits in the n-th Copeland-Erdős prime).` `Cf. A019518, A069151.` `Cf. A033308 (Decimal expansion of Copeland-Erdős constant: concatenate primes).` `Sequence in context: A114794 A090509 A069151 * A091763 A124513 A081781` `Adjacent sequences: A227526 A227527 A227528 * A227530 A227531 A227532`
	KEYWORD	`base,nonn,hard`
	AUTHOR	`Eric W. Weisstein, Jul 14 2013`
	STATUS	`approved`

Last modified July 16 12:38 EDT 2021. Contains 346065 sequences. (Running on oeis4.)