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A052230
Primes p from A031924 such that A052180(primepi(p)) = 5.
1
23, 31, 53, 61, 83, 151, 173, 233, 263, 271, 331, 353, 383, 443, 503, 541, 563, 571, 593, 601, 653, 751, 991, 1013, 1103, 1223, 1231, 1283, 1291, 1321, 1433, 1493, 1553, 1613, 1621, 1741, 1861, 1973, 2011, 2063, 2131, 2281, 2333, 2341, 2371, 2393, 2543
OFFSET
1,1
LINKS
MAPLE
filter:= proc(p) local t, m, flag;
flag:= false;
for t from p+1 to p+5 do
m:= min(numtheory:-factorset(t));
if m > 5 then return false
elif m = 5 then flag:= true
fi
od;
flag
end proc:
Res:= NULL: count:= 0:
q:= 1: p:= 2:
while count < 100 do
q:= p;
p:= nextprime(p);
if p-q = 6 and filter(q) then
count:= count+1; Res:= Res, q;
fi
od:
Res; # Robert Israel, Aug 12 2018
CROSSREFS
KEYWORD
nonn
AUTHOR
Labos Elemer, Feb 01 2000
STATUS
approved