

A156307


Primes where the first digit equals the sum of all the other digits.


3



11, 101, 211, 431, 523, 541, 743, 761, 853, 2011, 4013, 4211, 5023, 5113, 7043, 7151, 7331, 8017, 8053, 8161, 8233, 8431, 8521, 20011, 20101, 21001, 40013, 40031, 41201, 42101, 50023, 50131, 50221, 50311, 51031, 52021, 52201, 53101, 54001, 70061, 70223, 70241, 70313, 71411, 72221, 73013, 73121, 74021, 74201, 75011, 76001, 80071, 80107, 80233, 80251, 80341, 80611, 80701
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OFFSET

1,1


COMMENTS

There is no term that begins with 3, 6 or 9.  Bernard Schott, Feb 16 2020


LINKS

Daniel Starodubtsev, Table of n, a(n) for n = 1..1000


EXAMPLE

4211 is a prime where the first digit equals the sum of all the other digits.


MATHEMATICA

ferQ[n_]:=Module[{idn=IntegerDigits[n]}, First[idn]==Total[Rest[idn]]]; Select[Prime[Range[8000]], ferQ] (* Harvey P. Dale, Jun 22 2011 *)


CROSSREFS

Cf. A000040.
Sequence in context: A180406 A174884 A121402 * A057532 A193699 A001603
Adjacent sequences: A156304 A156305 A156306 * A156308 A156309 A156310


KEYWORD

nonn,base


AUTHOR

Parthasarathy Nambi, Feb 07 2009


EXTENSIONS

Corrected and extended by Zak Seidov, Feb 08 2009


STATUS

approved



