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Search: a178589 -id:a178589
Displaying 1-2 of 2 results found.
page 1
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A178587
Primes that are the average of the members of more than one emirp pair.
+10
2
14741, 22727, 23327, 24547, 25447, 27067, 28277, 42929, 63541, 65761, 85453, 1217171, 1221221, 1227271, 1243421, 1245421, 1246471, 1250521, 1253521, 1257521, 1261571, 1271671, 1283771, 1327231, 1335331, 1338331, 1339381
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..27.
EXAMPLE
25477 is a prime equidistant between the members of each of the emirp pairs (10993, 39901), (13963, 36931), (17923, 32971), (18913, 31981).
CROSSREFS
Cf. A178581, A178588, A178589.
KEYWORD
nonn,base
AUTHOR
Lekraj Beedassy, May 29 2010
EXTENSIONS
Extended by Ray Chandler, Jul 05 2010
a(12)-a(27) from Donovan Johnson, Jul 06 2010
STATUS
approved
A178588
Primes that are the average of the members of exactly 2 emirp pairs.
+10
2
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
(list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
LINKS
Table of n, a(n) for n=1..26.
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
AUTHOR
Lekraj Beedassy, May 29 2010
EXTENSIONS
Extended by Ray Chandler, Jul 05 2010
a(8)-a(26) from Donovan Johnson, Jul 06 2010
STATUS
approved
page 1

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