The On-Line Encyclopedia of Integer Sequences (OEIS)

Revision History for A178588 (Bold, blue-underlined text is an addition; faded, red-underlined text is a ~~deletion~~.)
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A178588

Primes that are the average of the members of exactly 2 emirp pairs.
(history; published version)

#5 by Russ Cox at Sat Mar 31 10:26:16 EDT 2012

AUTHOR

_Lekraj Beedassy (blekraj(AT)yahoo.com), _, May 29 2010

Discussion

Sat Mar 31

10:26

OEIS Server: https://oeis.org/edit/global/489

#4 by Russ Cox at Fri Mar 30 17:35:02 EDT 2012

EXTENSIONS

a(8)-a(26) from _Donovan Johnson (donovan.johnson(AT)yahoo.com), _, Jul 06 2010

Discussion

Fri Mar 30

17:35

OEIS Server: https://oeis.org/edit/global/163

#3 by Russ Cox at Fri Mar 30 17:30:00 EDT 2012

EXTENSIONS

Extended by _Ray Chandler (rayjchandler(AT)sbcglobal.net), _, Jul 05 2010

Discussion

Fri Mar 30

17:30

OEIS Server: https://oeis.org/edit/global/154

#2 by N. J. A. Sloane at Sat Jul 31 03:00:00 EDT 2010

EXTENSIONS

a(8)-a(26) from Donovan Johnson (donovan.johnson(AT)yahoo.com), Jul 06 2010

#1 by N. J. A. Sloane at Sun Jul 11 03:00:00 EDT 2010

NAME

Primes that are the average of the members of exactly 2 emirp pairs.

DATA

14741, 22727, 23327, 28277, 63541, 65761, 85453, 1217171, 1221221, 1227271, 1243421, 1245421, 1253521, 1261571, 1271671, 1283771, 1327231, 1338331, 1347481, 1359581, 1363631, 1371731, 1415191, 1489841, 1513151, 1514101

OFFSET

1,1

EXAMPLE

23327 is the prime arithmetic mean of emirp pair (10853, 35801) as well as of emirp pair (15803, 30851), and no other.

CROSSREFS

Cf. A178581, A178587, A178589.

KEYWORD

nonn,base,new

AUTHOR

Lekraj Beedassy (blekraj(AT)yahoo.com), May 29 2010

EXTENSIONS

Extended by Ray Chandler (rayjchandler(AT)sbcglobal.net), Jul 05 2010

STATUS

approved