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A071613 a(n) is the smallest prime such that it is the first of n consecutive primes with equal digit sum. 5
2, 523, 22193, 1442173, 5521819, 354963229, 881160173, 881160173, 441586802467, 3085029222449 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

a(11) > 10^14. - Giovanni Resta, Aug 15 2013

LINKS

Table of n, a(n) for n=1..10.

EXAMPLE

a(3) = 22193, since 22193,22229,22247 are three consecutive primes with digit sum 17 and this is the first occurrence of three consecutive primes with equal digit sum.

CROSSREFS

Cf. A006567, A070905, A071614.

Sequence in context: A080778 A007513 A283756 * A262649 A202277 A177836

Adjacent sequences:  A071610 A071611 A071612 * A071614 A071615 A071616

KEYWORD

base,more,nonn

AUTHOR

Klaus Brockhaus, May 27 2002

EXTENSIONS

a(7)-a(9) from Donovan Johnson, Dec 02 2009

a(10) from Giovanni Resta, Aug 14 2013

STATUS

approved

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Last modified July 25 04:48 EDT 2017. Contains 289779 sequences.