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Search: id:A019546
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| A019546 |
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Primes whose digits are primes. |
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+0
22
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| 2, 3, 5, 7, 23, 37, 53, 73, 223, 227, 233, 257, 277, 337, 353, 373, 523, 557, 577, 727, 733, 757, 773, 2237, 2273, 2333, 2357, 2377, 2557, 2753, 2777, 3253, 3257, 3323, 3373, 3527, 3533, 3557, 3727, 3733, 5227, 5233, 5237, 5273, 5323, 5333, 5527, 5557
(list; graph; listen)
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OFFSET
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1,1
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REFERENCES
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H. Ibstedt, A Few Smarandache Integer Sequences, Smarandache Notions Journal, Vol. 8, No. 1-2-3, 1997, pp. 171-183.
Sylvester Smith, "A Set of Conjectures on Smarandache Sequences", Bulletin of Pure and Applied Sciences, (Bombay, India), Vol. 15 E (No. 1), 1996, pp. 101-107.
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LINKS
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M. L. Perez et al., eds., Smarandache Notions Journal
Eric Weisstein's World of Mathematics, Link to a section of The World of Mathematics.
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PROGRAM
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(PARI) primedigits(n) = { local(ln, x, flag, j, y); forprime(x=2, n, ln=length(Str(x)); y=Vec(Str(x)); flag=0; for(j=1, ln, if(isprime(eval(y[j])), flag=1, flag=0; break) ); if(flag, print1(x", ") ) ) } - Cino Hilliard (hillcino368(AT)gmail.com), Aug 06 2006
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CROSSREFS
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Cf. A045336.
Sequence in context: A074491 A154385 A125525 this_sequence A104179 A096148 A124674
Adjacent sequences: A019543 A019544 A019545 this_sequence A019547 A019548 A019549
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KEYWORD
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nonn,base
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AUTHOR
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R. Muller
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EXTENSIONS
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More terms from Cino Hilliard (hillcino368(AT)gmail.com), Aug 06 2006
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