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A185104
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Primes with property that each swapping any pair of digits also gives a prime.
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0
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11, 13, 17, 31, 37, 71, 73, 79, 97, 113, 131, 179, 199, 311, 337, 373, 733, 919, 991, 3911
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OFFSET
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1,1
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COMMENTS
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Conjecture: next terms are 1111111111111111111 and 11111111111111111111111.
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LINKS
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EXAMPLE
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Prime 179 is a term because 197 and 719 are also prime.
Prime 1913 is not a term because 9113 is not prime (even though 1193, 1319, 1931 and 3911 are primes).
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CROSSREFS
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Subsequence of A069706 (primes with property that swapping first and last digits also gives a prime).
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KEYWORD
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nonn,base,less
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AUTHOR
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STATUS
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approved
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