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A348699
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Primes with a prime number of prime digits.
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2
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23, 37, 53, 73, 127, 137, 157, 173, 223, 227, 229, 233, 239, 251, 257, 263, 271, 277, 283, 293, 307, 313, 317, 331, 337, 347, 353, 359, 367, 373, 379, 383, 397, 433, 457, 503, 521, 523, 547, 557, 563, 571, 577, 587, 593, 653, 673, 677, 727, 733, 739, 743, 751, 757, 773, 787, 797
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OFFSET
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1,1
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LINKS
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MATHEMATICA
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Select[Range[800], And @@ PrimeQ[{#, Count[IntegerDigits[#], _?PrimeQ]}] &] (* Amiram Eldar, Nov 04 2021 *)
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PROG
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(Python)
from sympy import isprime as i
from sympy import primerange as p
print([x for x in p(1, 800) if i(len([d for d in str(x) if i(int(d))]))])
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CROSSREFS
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KEYWORD
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base,easy,nonn
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AUTHOR
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STATUS
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approved
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