

A067522


Smallest prime with sum of digits = 2^n.


0



2, 13, 17, 79, 6899, 19999999, 399899999999999, 59998999999999999999999999999, 999999999998999999999999999999999999999999999999999999999, 899999999999999999999999999999998999999999999999999999999999999999999999999999999999999999999999999999999999999999
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OFFSET

1,1


COMMENTS

According to the Magma Calculator (http://magma.maths.usyd.edu.au/calc/), all terms through a(10) are prime.  Jon E. Schoenfield, Aug 24 2009


LINKS



EXAMPLE

a(5) = 6899 which is the smallest prime with 6+8+9+9 = 32 = 2^5.


CROSSREFS



KEYWORD

base,easy,nonn


AUTHOR



EXTENSIONS

a(6) and a(7) found by Shyam Sunder Gupta, Feb 17 2002


STATUS

approved



