|
Search: id:A133975
|
|
|
| A133975 |
|
Home primes whose homeliness is greater than 10. |
|
+0
13
|
|
| 378997, 379811, 747521, 777643, 1173463, 2314723, 2315641, 2333797, 2337397, 2337607, 2337691, 3127979, 3127997, 3136607, 3173761, 3182561, 3371237, 3372371, 3373547, 3373907, 3374729, 3376991, 3377999, 3378317, 3379829
(list; graph; listen)
|
|
|
OFFSET
|
1,1
|
|
|
COMMENT
|
Number of terms < 10^n: 0, 0, 0, 0, 0, 4, 60, ....
|
|
MATHEMATICA
|
lst = {}; f[n_] := FromDigits@ Flatten[ IntegerDigits@ Table[ #[[1]], {#[[2]]}] & /@ FactorInteger@n, 2]; h[n_] := NestWhileList[f@# &, n, !PrimeQ@# &, 1, 28]; Do[p = h[n][[ -1]]; If[ PrimeQ@p && p < 10^7 && p != n, Print[{n, p}]; AppendTo[lst, p]], {n, 2, 1000}];
d = 11 - 2; lsu = {}; Do[ If[ lst[[n]] == lst[[n + d]], AppendTo[ lsu, lst[[n]] ]], {n, 188004 - d - 1}]; Take[ Union@ lsu, 30]
|
|
CROSSREFS
|
Cf. A037274, A118756, A133957, A133959, A133961, A133963, A133965, A133967, A133969, A133971, A133973, A133977, A133979.
Sequence in context: A043661 A147770 A089444 this_sequence A133977 A133978 A159265
Adjacent sequences: A133972 A133973 A133974 this_sequence A133976 A133977 A133978
|
|
KEYWORD
|
nonn
|
|
AUTHOR
|
Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 30 2007
|
|
|
Search completed in 0.002 seconds
|
