login
The OEIS is supported by the many generous donors to the OEIS Foundation.

 

Logo
Hints
(Greetings from The On-Line Encyclopedia of Integer Sequences!)
A069709 Primes with arithmetic mean of digits an integer (sum of digits = a multiple of number of digits). 10
2, 3, 5, 7, 11, 13, 17, 19, 31, 37, 53, 59, 71, 73, 79, 97, 1021, 1061, 1069, 1087, 1151, 1201, 1223, 1249, 1289, 1429, 1447, 1483, 1487, 1511, 1559, 1601, 1609, 1627, 1663, 1667, 1753, 1847, 1861, 1933, 1951, 1973, 1999, 2011, 2099, 2141, 2213, 2239, 2293 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

LINKS

Table of n, a(n) for n=1..49.

MATHEMATICA

Do[p = Prime[n]; If[ IntegerQ[ Apply[ Plus, IntegerDigits[p]] / Floor[ Log[10, p] + 1]], Print[p]], {n, 1, 10^3}]

Select[Prime[Range[400]], IntegerQ[Mean[IntegerDigits[#]]]&] (* Harvey P. Dale, Jan 29 2012 *)

CROSSREFS

Cf. A069710, A069711, A069712.

Sequence in context: A002200 A181561 A216496 * A144755 A069090 A321150

Adjacent sequences:  A069706 A069707 A069708 * A069710 A069711 A069712

KEYWORD

nonn,base

AUTHOR

Amarnath Murthy, Apr 08 2002

EXTENSIONS

Edited and extended by Robert G. Wilson v, Apr 12 2002

STATUS

approved

Lookup | Welcome | Wiki | Register | Music | Plot 2 | Demos | Index | Browse | More | WebCam
Contribute new seq. or comment | Format | Style Sheet | Transforms | Superseeker | Recents
The OEIS Community | Maintained by The OEIS Foundation Inc.

License Agreements, Terms of Use, Privacy Policy. .

Last modified August 13 18:03 EDT 2022. Contains 356107 sequences. (Running on oeis4.)