|
Search: id:A108846
|
|
|
| A108846 |
|
Primes such that the outer 2 digits are n and all inner digits are 2, where 0 < n <= 9. |
|
+0
1
|
|
| 727, 929, 72227, 3222223, 9222229, 322222223, 722222227, 9222222222229, 72222222222222222222222222227, 72222222222222222222222222222222222222222222222222222222222222227
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
PROGRAM
|
(PARI) n10np1(n, d) = { local(x, y, k); for(x=1, n, for(k=1, 9, y=10^(x+1)*k+floor(10^x*d/9)*10+k; if(isprime(y), print1(y", ")) ) ) }
|
|
CROSSREFS
|
Sequence in context: A068688 A088283 A123096 this_sequence A052234 A103170 A129117
Adjacent sequences: A108843 A108844 A108845 this_sequence A108847 A108848 A108849
|
|
KEYWORD
|
easy,nonn,base
|
|
AUTHOR
|
Cino Hilliard (hillcino368(AT)gmail.com), Jul 11 2005
|
|
|
Search completed in 0.002 seconds
|
