|
| |
|
|
A084125
|
|
Numbers n such that 13*3^n + 2 is prime.
|
|
1
| |
|
|
1, 3, 6, 7, 11, 29, 106, 111, 138, 966, 1203, 2719, 3357, 11445
(list; graph; refs; listen; history; internal format)
|
|
|
|
OFFSET
| 1,2
|
|
|
COMMENTS
| Values corresponding to 29, 106, 111, 138, 966, 1203 and 2719 (1299 digits) have been certified prime with Primo. 13*3^3357 + 2 is a probable prime. There are no other terms <= 6000.
|
|
|
EXAMPLE
| Primes 41,353,9479,28433 are 13*3^1+2, 13*3^3+2, 13*3^6+2, 13*3^7+2.
|
|
|
PROG
| (PARI) for(n=1, 6000, if(isprime(13*3^n+2), print1(n, ", ")))
|
|
|
CROSSREFS
| Sequence in context: A047556 A015819 A181683 * A053478 A138037 A073934
Adjacent sequences: A084122 A084123 A084124 * A084126 A084127 A084128
|
|
|
KEYWORD
| nonn
|
|
|
AUTHOR
| Rick L. Shepherd (rshepherd2(AT)hotmail.com), May 21 2003
|
|
|
EXTENSIONS
| 11445 (a pseudoprime) from Huseyin Azoguz (huseyin(AT)mmnetz.de), Nov 30 2008
|
| |
|
|
