id:A070029 - OEIS Search Results

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Primes with only prime digits and whose initial, all intermediate, and final iterated sums of digits are primes.

+0
2

2, 3, 5, 7, 23, 223, 227, 353, 2333, 2777, 3323, 7727, 27527, 33377, 33773, 35537, 35573, 35753, 37337, 52727, 53777, 55337, 55373, 55733, 57557, 57737, 57773, 73553, 73757, 75227, 75353, 75377, 75533, 75557, 75773, 77573, 222557, 222773 (list; graph; listen)

	OFFSET	`1,1`
	COMMENT	`This sequence is the intersection of A062088 and A070027.`
	EXAMPLE	`53777 is a term because 53777 is a prime with only prime digits and 5+3+7+7+7=29, 2+9=11, and 1+1=2 are all prime.`
	CROSSREFS	`Cf. A070027, A062088 (only first sum of digits is necessarily prime).` `Adjacent sequences: A070026 A070027 A070028 this_sequence A070030 A070031 A070032` `Sequence in context: A006055 A052017 A062088 this_sequence A110094 A088054 A085907`
	KEYWORD	`base,nonn`
	AUTHOR	`Rick L. Shepherd (rshepherd2(AT)hotmail.com), Apr 21 2002`

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Last modified May 16 23:01 EDT 2008. Contains 139884 sequences.

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