A089743 -id:A089743 - cp's OEIS frontend

A089744 Least palindromic prime beginning with A089743(n).

11, 2, 3, 5, 7, 919, 101, 11, 12421, 131, 14341, 151, 16061, 17471, 181, 191, 30103, 313, 32323, 33533, 34543, 353, 36263, 373, 383, 39293, 70207, 71317, 727, 73037, 74047, 757, 76367, 77377, 787, 797, 90709, 919, 929, 93139, 94049, 95959, 96269

Offset: 1

Amarnath Murthy, Nov 19 2003

Cf. A082769, A089743.

More terms from David Wasserman, Jul 28 2005

A088277 Let f(n) be the n-th palindrome in A089743. Then a(n) is the smallest palindromic prime that begins with f(n).

Original entry on oeis.org

11, 2, 3, 5, 7, 919, 11, 33533, 77377, 9902099, 101, 1114111, 1212121, 131, 1411141, 151, 1611161, 1712171, 181, 191, 303050303, 313, 32323, 3331333, 3439343, 353, 3635363, 373, 383, 3931393, 7073707, 7177717, 727, 737171737, 74747, 757

Offset: 1

Amarnath Murthy, Sep 29 2003

			f(7) = 33, the 7th palindrome that is the beginning of a palindromic prime, so a(7) = A109864(33) = 33533.

Cf. A082769, A089743, A109864.

Edited and extended by David Wasserman, Jul 28 2005

A082768 Numbers that begin with 1, 3, 7 or 9.

Original entry on oeis.org

1, 3, 7, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 90, 91, 92, 93, 94, 95, 96, 97, 98, 99, 100, 101, 102, 103, 104, 105, 106, 107, 108, 109, 110, 111, 112, 113, 114, 115, 116, 117, 118, 119

Offset: 1

Amarnath Murthy, Apr 18 2003

Cf. A082769, A082770, A045572 (Numbers that end with 1, 3, 7 or 9).

Cf. A082769, A082770, A089743.

isA082768 := proc(n)
    convert(n,base,10) ;
    if op(-1,%) in {1,3,7,9} then
        true;
    else
        false;
    end if;
end proc:
A082768 := proc(n)
    if n = 1 then
        1;
    else
        for a from procname(n-1)+ 1 do
            if isA082768(a) then
                return a;
            end if;
        end do:
    end if;
end proc:
seq(A082768(n),n=1..120) ; # R. J. Mathar, Aug 27 2025

Select[Range[119], MemberQ[{1, 3, 7, 9}, First[IntegerDigits[#]]] &] (* Jayanta Basu, Jun 24 2013 *)

More terms from David Wasserman, Jul 28 2005

Offset changed by Andrew Howroyd, Sep 29 2024

cp's OEIS Frontend

A089744 Least palindromic prime beginning with A089743(n).

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A088277 Let f(n) be the n-th palindrome in A089743. Then a(n) is the smallest palindromic prime that begins with f(n).

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Extensions

A082768 Numbers that begin with 1, 3, 7 or 9.

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