OFFSET
1,1
COMMENTS
It is conjectured that 7, 13 and 31 is the only triple with this property
EXAMPLE
3583 is a member as 3583, 73583, 35837, 123583, 358313, 313583, 358331 are all prime.
CROSSREFS
KEYWORD
hard,nonn,base
AUTHOR
Anton Vrba (antonvrba(AT)yahoo.com), Jan 13 2007
STATUS
approved