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 A067522 Smallest prime with sum of digits = 2^n. 0
 2, 13, 17, 79, 6899, 19999999, 399899999999999, 59998999999999999999999999999, 999999999998999999999999999999999999999999999999999999999, 899999999999999999999999999999998999999999999999999999999999999999999999999999999999999999999999999999999999999999 (list; graph; refs; listen; history; text; internal format)
 OFFSET 1,1 COMMENTS The new terms are probable primes. - Joshua Zucker, May 08 2006 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 Sequence in context: A122487 A109181 A175448 * A128852 A191765 A063615 Adjacent sequences:  A067519 A067520 A067521 * A067523 A067524 A067525 KEYWORD base,easy,nonn AUTHOR Amarnath Murthy, Feb 14 2002 EXTENSIONS a(6) and a(7) found by Shyam Sunder Gupta, Feb 17 2002 More terms from Joshua Zucker, May 08 2006 Edited by T. D. Noe, Oct 30 2008 STATUS approved

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Last modified August 11 15:12 EDT 2020. Contains 336428 sequences. (Running on oeis4.)