Search: a088561 -id:a088561
|
|
A023219
|
|
Primes p such that 5p+6 is a prime.
|
|
+10
10
|
|
|
5, 7, 11, 13, 19, 29, 37, 41, 47, 53, 61, 79, 83, 97, 103, 107, 113, 127, 131, 137, 139, 149, 151, 163, 181, 193, 197, 211, 229, 233, 239, 257, 263, 271, 293, 313, 347, 359, 373, 379, 389, 401, 421, 431, 443, 449, 461, 467, 487, 503, 509, 523, 541, 547, 557, 569, 571, 593
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
REFERENCES
|
M. Cerasoli, F. Eugeni and M. Protasi, Elementi di Matematica Discreta, Bologna 1988
Emanuele Munarini and Norma Zagaglia Salvi, Matematica Discreta,UTET, CittaStudiEdizioni, Milano 1997
|
|
LINKS
|
|
|
MATHEMATICA
|
Select[Prime[Range[200]], PrimeQ[5#+6]&] (* Harvey P. Dale, Jul 27 2011 *)
|
|
PROG
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|
|
A088555
|
|
Primes of the form 5*p + 6 where p is a prime.
|
|
+10
4
|
|
|
31, 41, 61, 71, 101, 151, 191, 211, 241, 271, 311, 401, 421, 491, 521, 541, 571, 641, 661, 691, 701, 751, 761, 821, 911, 971, 991, 1061, 1151, 1171, 1201, 1291, 1321, 1361, 1471, 1571, 1741, 1801, 1871, 1901, 1951, 2011, 2111, 2161, 2221, 2251, 2311, 2341
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
COMMENTS
|
|
|
LINKS
|
|
|
FORMULA
|
|
|
MATHEMATICA
|
6 + 5 Select[Prime[Range[200]], PrimeQ[5 # + 6] &] (* Vincenzo Librandi, May 19 2017 *)
|
|
PROG
|
(Magma) [5*p+6: p in PrimesUpTo(600)| IsPrime(5*p+6)]; // Vincenzo Librandi, May 19 2017
(PARI) forprime(p=2, 500, my(pp=5*p+6); if(isprime(pp), print1(pp, ", "))) \\ Hugo Pfoertner, Aug 06 2021
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
|
|
|
|
3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 18, 22, 23, 25, 27, 28, 30, 31, 32, 33, 34, 35, 36, 38, 42, 44, 45, 47, 50, 51, 52, 55, 56, 58, 62, 65, 69, 72, 74, 75, 77, 79, 82, 83, 86, 87, 89, 91, 93, 96, 97, 99, 100, 101, 102, 104, 105, 108, 109, 110, 111, 117, 119, 120, 122, 123
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
FORMULA
|
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,easy
|
|
AUTHOR
|
|
|
EXTENSIONS
|
|
|
STATUS
|
approved
|
|
|
Search completed in 0.008 seconds
|