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A062333
Primes starting and ending with 3.
3
3, 313, 353, 373, 383, 3023, 3083, 3163, 3203, 3253, 3313, 3323, 3343, 3373, 3413, 3433, 3463, 3533, 3583, 3593, 3613, 3623, 3643, 3673, 3733, 3793, 3803, 3823, 3833, 3853, 3863, 3923, 3943, 30013, 30103, 30113, 30133, 30203, 30223, 30253, 30293
OFFSET
1,1
COMMENTS
Intersection of A045709 and A030431. - Michel Marcus, Jun 08 2013
LINKS
EXAMPLE
3413 is a member, as it is a prime and the first and the last digits are both 3.
MATHEMATICA
se3Q[n_]:=Module[{idn=IntegerDigits[n]}, idn[[1]]==idn[[-1]]==3]; Select[ Prime[ Range[3300]], se3Q] (* Harvey P. Dale, Jul 24 2019 *)
PROG
(PARI) { n=-1; t=log(10); forprime (p=2, 5*10^5, if ((p-10*(p\10)) == 3 && (p\10^(log(p)\t)) == 3, write("b062333.txt", n++, " ", p); if (n==1000, break)) ) } \\ Harry J. Smith, Aug 05 2009
CROSSREFS
KEYWORD
nonn,base,easy
AUTHOR
Amarnath Murthy, Jun 21 2001
EXTENSIONS
More terms from Larry Reeves (larryr(AT)acm.org), Jun 29 2001
Offset changed by Andrew Howroyd, Sep 17 2024
STATUS
approved