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A133967 Home primes whose homeliness is greater than 6. 12
3761, 13367, 23251, 23761, 31397, 33797, 36389, 37643, 37951, 37967, 77711, 77773, 113779, 131777, 132749, 132953, 134129, 178069, 229751, 233347, 233617, 233743, 233881, 233911, 237547, 293863, 311677, 311821, 312619, 313613, 313619, 313739 (list; graph; refs; listen; history; text; internal format)
OFFSET
1,1
COMMENTS
Number of terms < 10^n: 0, 0, 0, 1, 12, 144, 1273, ....
LINKS
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 = 7 - 2; lsu = {}; Do[ If[ lst[[n]] == lst[[n + d]], AppendTo[ lsu, lst[[n]] ]], {n, 188004 - d - 1}]; Take[ Union@ lsu, 35]
CROSSREFS
Sequence in context: A238031 A178162 A236051 * A133969 A133970 A252564
KEYWORD
nonn,base
AUTHOR
Robert G. Wilson v, Sep 30 2007
STATUS
approved

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Last modified March 19 07:31 EDT 2024. Contains 370955 sequences. (Running on oeis4.)