|
|
A106094
|
|
Primes with maximal digit = 8.
|
|
7
|
|
|
83, 181, 281, 283, 383, 487, 587, 683, 787, 811, 821, 823, 827, 853, 857, 863, 877, 881, 883, 887, 1087, 1181, 1187, 1283, 1381, 1481, 1483, 1487, 1583, 1783, 1787, 1801, 1811, 1823, 1831, 1847, 1861, 1867, 1871, 1873, 1877
(list;
graph;
refs;
listen;
history;
text;
internal format)
|
|
|
OFFSET
|
1,1
|
|
LINKS
|
|
|
MAPLE
|
Res:= NULL: count:= 0:
C:= {$1..8}: B:= {8}:
for d from 2 while count < 100 do
B:= map(t -> 10*t+8, C) union map(t -> seq(10*t+j, j=0..7), B);
C:= map(t -> seq(10*t+i, i=0..8), C);
V:= select(isprime, B);
count:= count + nops(V);
Res:= Res, op(sort(convert(V, list)));
od:
|
|
MATHEMATICA
|
Select[Prime[Range[200]], Max[IntegerDigits[ # ]]==8&]
|
|
CROSSREFS
|
|
|
KEYWORD
|
nonn,base
|
|
AUTHOR
|
|
|
STATUS
|
approved
|
|
|
|