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A163648
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Primes p with a prime number of syllables in their name in American English.
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4
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7, 11, 13, 17, 19, 23, 29, 31, 41, 43, 53, 59, 61, 83, 89, 107, 113, 127, 137, 157, 167, 173, 179, 197, 227, 257, 271, 307, 313, 337, 347, 367, 373, 379, 397, 419, 457, 467, 479, 487, 547, 557, 571, 587, 607, 613, 619, 647, 673, 701, 709, 733, 739, 743, 751
(list;
graph;
refs;
listen;
history;
text;
internal format)
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OFFSET
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1,1
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COMMENTS
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The word "and" is excluded, 101 is "one hundred one" rather than "one hundred and one."
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LINKS
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FORMULA
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EXAMPLE
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a(1) = 7, which has a prime number, 2, of syllables sev-en. a(2) = 11, which has a prime number, 3, of syllables e-lev-en.
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PROG
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(Python) # uses function in A075774
from sympy import isprime
def ok(n): return isprime(A075774(n)) and isprime(n)
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CROSSREFS
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KEYWORD
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word,easy,nonn
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AUTHOR
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EXTENSIONS
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STATUS
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approved
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