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A133975
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Home primes whose homeliness is greater than 10.
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12
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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; refs; listen; history; internal format)
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OFFSET
| 1,1
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COMMENTS
| Number of terms < 10^n: 0, 0, 0, 0, 0, 4, 60, ....
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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]
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CROSSREFS
| Cf. A037274, A118756, A133957, A133959, A133961, A133963, A133965, A133967, A133969, A133971, A133973, A133977, A133979.
Sequence in context: A147770 A089444 A203740 * A133977 A133978 A159265
Adjacent sequences: A133972 A133973 A133974 * A133976 A133977 A133978
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KEYWORD
| nonn
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AUTHOR
| Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 30 2007
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