A117682 Prime numbers for which the product of the digits is a triangular number.

3, 11, 13, 23, 31, 37, 47, 53, 59, 61, 73, 101, 103, 107, 109, 113, 131, 137, 149, 173, 227, 229, 251, 263, 307, 311, 317, 353, 401, 409, 419, 433, 491, 503, 509, 521, 601, 607, 661, 701, 709, 769, 809, 853, 907, 941, 967, 1009, 1013, 1019, 1021, 1031, 1033

Offset: 1

Author

Luc Stevens (lms022(AT)yahoo.com), Apr 27 2006

Keywords

• nonn
• base

Examples

			59 is in the sequence because (1) it is a prime number and (2) the product of its digits 5*9=45 is a triangular number.
		

Crossrefs

Cf. A000217.