

A210704


Primes formed by initial digits of 3^(1/3) = A002581, i.e., of the form floor[3^(1/3)*10^k].


5




OFFSET

1,1


COMMENTS

Inspired by prime curios about 4957 (cf. LINKS), one of which honors the late Bruce Murray, 30.11.1931  29.8.2013.
See A210706 for the kvalues. The keyword "less" for this records means that the next term (2488 digits) cannot be added / displayed here, and instead of listing further primes here, the kvalues should be recorded in A210706.


LINKS

Table of n, a(n) for n=1..2.
C. Caldwell, G.L. Honaker (Eds.), 4957 (another Prime Pages' Curiosity).


FORMULA

a(n) = floor[A002581 * 10^A210706(n)], where A002581 is taken as a constant.


PROG

(PARI) (c=sqrtn(3, 3), v=1/*set to 0 for indices instead of values*/)>for(k=0, precision(c), ispseudoprime(p=c\.1^k)&&print1([k, p][1+v]", "))


CROSSREFS

Cf. A005042 (analog for Pi), A007512 (analog for e), A115453 (analog for sqrt(2)), A119343 (analog for sqrt(3)), A072952 (analog for gamma).
Sequence in context: A105299 A094232 A234594 * A132185 A003942 A003935
Adjacent sequences: A210701 A210702 A210703 * A210705 A210706 A210707


KEYWORD

nonn,bref,less,base


AUTHOR

M. F. Hasler, Aug 31 2013


STATUS

approved



