OFFSET
1,1
COMMENTS
Also numbers whose number of occurrence in A253597 equals the number of their prime factors.
All known terms have only 3 prime factors. Does any term with more than 3 prime factors exist?
EXAMPLE
565861139 = 193*1163*2521 and no smaller Lucas-Carmichael number is divisible by 193, 1163 or 2521.
PROG
(PARI) a=readvec("b006972.txt"); print1(399); for(b=2, 10000, e=true; f=factor(a[b]); for(d=1, #f[, 1], for(c=1, b-1, if(a[c]%f[d, 1]==0, e=false))); if(e==true, print1(", ", a[b])))
CROSSREFS
KEYWORD
nonn,more
AUTHOR
Tim Johannes Ohrtmann, Feb 05 2018
STATUS
approved