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A007500 Primes whose reversal in base 10 is also prime (called "palindromic primes" by D. Wells, although that name usually refers to A002385).
(Formerly M0657)
+0
22
2, 3, 5, 7, 11, 13, 17, 31, 37, 71, 73, 79, 97, 101, 107, 113, 131, 149, 151, 157, 167, 179, 181, 191, 199, 311, 313, 337, 347, 353, 359, 373, 383, 389, 701, 709, 727, 733, 739, 743, 751, 757, 761, 769, 787, 797, 907, 919, 929, 937, 941, 953, 967, 971, 983, 991, 1009, 1021 (list; graph; listen)
OFFSET

1,1

COMMENT

The numbers themselves need not be palindromes.

REFERENCES

D. Wells, The Penguin Dictionary of Curious and Interesting Numbers. Penguin Books, NY, 1986, 134.

LINKS

T. D. Noe, Table of n, a(n) for n=1..10000

MATHEMATICA

Select[ Prime[ Range[ 168 ] ], PrimeQ[ FromDigits[ Reverse[ IntegerDigits[ # ] ] ] ]& ] (from Zak Seidov, corrected by T. D. Noe)

CROSSREFS

Cf. A006567, A007628.

Cf. A002385 (primes that are palindromes in base 10)

Equals A002385 union A006567.

Adjacent sequences: A007497 A007498 A007499 this_sequence A007501 A007502 A007503

Sequence in context: A055387 A061461 A069706 this_sequence A090933 A107845 A090934

KEYWORD

base,nonn,nice

AUTHOR

N. J. A. Sloane (njas(AT)research.att.com), Robert G. Wilson v (rgwv(AT)rgwv.com)

EXTENSIONS

More terms from Larry Reeves (larryr(AT)acm.org), Oct 31 2000

Added further terms to the sequence Avik Roy (avik_3.1416(AT)yahoo.co.in), Jan 16 2009. Checked by N. J. A. Sloane (njas(AT)research.att.com), Jan 20 2009.

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Last modified July 4 09:27 EDT 2009. Contains 160562 sequences.


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