A163759 Exactly three distinct primes occur as substrings of the digits of n.

23, 37, 53, 73, 117, 123, 127, 132, 135, 139, 153, 157, 167, 171, 172, 175, 193, 211, 213, 217, 227, 229, 230, 232, 234, 236, 238, 241, 243, 247, 251, 259, 263, 267, 275, 277, 279, 295, 307, 312, 315, 319, 323, 325, 327, 329, 331, 352, 357, 370, 374, 376

Offset

1,1

Links

Table of n, a(n) for n=1..52.

Example

a(1) = 23 because "2" and "3" and "23" are prime substrings of "23".

Crossrefs

Sequence in context: A105184 A238056 A066064 * A190731 A348699 A092622

Adjacent sequences: A163756 A163757 A163758 * A163760 A163761 A163762

Keyword

base,easy,nonn

Author

Gil Broussard, Aug 03 2009

Status

approved