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A122716 Primes of the form p^2 + q^10 where p and q are primes. 0
1033, 1049, 1193, 1553, 2393, 3833, 6353, 10433, 11633, 12473, 19793, 25673, 38273, 50753, 52553, 55313, 59053, 67073, 95273, 98993, 101513, 114593, 158633, 197273, 215393, 300233, 376793, 381713, 427433, 459353, 553073, 620393, 735473, 787793 (list; graph; refs; listen; history; text; internal format)
OFFSET

1,1

COMMENTS

p and q cannot both be odd. Thus p=2 or q=2. There are rarer primes of the form 2^2 + q^10 such as 2^2 + 3^10 = 59053 and 2^2 + 5^10 = 9765629 and 2^2 + 13^10 = 137858491853. Hence most solutions are of the form 2^10 + q^2 and (except for rarer solutions such as 5^2 + 2^10 = 1049 and 2^2 + 5^10 = 9765629, no more with the larger prime under 100) are congruent to 3 mod 10.

LINKS

Table of n, a(n) for n=1..34.

FORMULA

{a(n)} = {p^2 + q^10 in A000040 where p and q are in A000040}.

EXAMPLE

a(1) = 3^2 + 2^10 = 1033.

a(2) = 5^2 + 2^10 = 1049.

a(3) = 13^2 + 2^10 = 1193.

a(4) = 23^2 + 2^10 = 1553.

MATHEMATICA

Take[Select[Sort[Table[Prime@p^2 + Prime@q^10, {p, 200}, {q, 3}] // Flatten], PrimeQ@# &], 34] (* Robert G. Wilson v, Sep 26 2006 *)

CROSSREFS

Cf. A000040, A045700 Primes of form p^2+q^3 where p and q are prime, A122617 Primes of form p^3+q^4 where p and q are primes.

Sequence in context: A283724 A168225 A282576 * A031609 A236804 A023063

Adjacent sequences:  A122713 A122714 A122715 * A122717 A122718 A122719

KEYWORD

easy,nonn

AUTHOR

Jonathan Vos Post, Sep 23 2006

EXTENSIONS

More terms from Robert G. Wilson v, Sep 26 2006

STATUS

approved

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Last modified September 22 05:47 EDT 2019. Contains 327287 sequences. (Running on oeis4.)