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A088807
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Number of prime factors of p^p - 1 where p is prime.
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2
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1, 2, 3, 4, 4, 5, 4, 3, 6, 9, 4, 9, 7, 6, 5, 7, 5, 8, 9, 7, 15, 8, 6, 10, 12, 13
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OFFSET
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2,2
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LINKS
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MATHEMATICA
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PrimeNu/@Table[p^p-1, {p, Prime[Range[30]]}] (* The program takes a long time to run. *) (* Harvey P. Dale, Sep 05 2020 *)
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PROG
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(PARI) omegaptop(n, m) = { sr=0; forprime(x=2, n, y=omega(x^x-m); print1(y", "); sr += 1.0/y; ); print(); }
(Python)
from sympy import factorint, prime
def a(n): p = prime(n); return len(factorint(p**p-1).values())
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CROSSREFS
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KEYWORD
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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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