id:A086379 - OEIS Search Results

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Numbers such that 1 + sum of digits as well as 1 + product of digits are both prime.

+0
1

1, 2, 4, 6, 11, 22, 28, 66, 82, 112, 114, 121, 123, 129, 132, 136, 141, 147, 156, 163, 165, 174, 189, 192, 198, 211, 213, 219, 231, 235, 237, 253, 268, 273, 279, 286, 291, 297, 312, 316, 321, 325, 327, 334, 343, 345, 349, 352, 354, 361, 367, 369, 372, 376, 394 (list; graph; listen)

	OFFSET	`1,2`
	MATHEMATICA	`f[n_] := Block[{d = IntegerDigits[n]}, PrimeQ[1 + Plus @@ d] && PrimeQ[1 + Times @@ d]]; Select[ Range[410], f[ # ] &]`
	CROSSREFS	`Sequence in context: A049870 A093970 A107428 this_sequence A096460 A084353 A084979` `Adjacent sequences: A086376 A086377 A086378 this_sequence A086380 A086381 A086382`
	KEYWORD	`nonn,base`
	AUTHOR	`Robert G. Wilson v (rgwv(AT)rgwv.com), Sep 07 2003`

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Last modified July 6 17:22 EDT 2008. Contains 140988 sequences.

AT&T Labs Research