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A070029 Primes with only prime digits and whose initial, all intermediate and final iterated sums of digits are primes. 1
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; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

This sequence is the intersection of A062088 and A070027.

LINKS

Table of n, a(n) for n=1..38.

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).

Sequence in context: A277575 A289754 A062088 * A262339 A110094 A088054

Adjacent sequences:  A070026 A070027 A070028 * A070030 A070031 A070032

KEYWORD

base,nonn

AUTHOR

Rick L. Shepherd, Apr 21 2002

STATUS

approved

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Last modified August 8 04:32 EDT 2020. Contains 336290 sequences. (Running on oeis4.)