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A099184 Heavy primes: primes p such that p-1 has more than 2 divisors with multiplicity. +0
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13, 17, 19, 29, 31, 37, 41, 43, 53, 61, 67, 71, 73, 79, 89, 97, 101, 103, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 173, 181, 191, 193, 197, 199, 211, 223, 229, 233, 239, 241, 251, 257, 269, 271, 277, 281, 283, 293, 307, 311, 313, 317, 331, 337, 349 (list; graph; listen)
OFFSET

2,1

COMMENT

Also called "unsafe" primes, although this terms usually includes 2 and 3.

PROGRAM

(PARI) f(n) = forprime(x=2, n, y=bigomega(x-1); if(y>2, print1(x", ")))

CROSSREFS

Cf. A059456.

Sequence in context: A167802 A105878 A054476 this_sequence A098095 A059500 A104213

Adjacent sequences: A099181 A099182 A099183 this_sequence A099185 A099186 A099187

KEYWORD

nonn

AUTHOR

Cino Hilliard (hillcino368(AT)gmail.com), Nov 15 2004

page 1

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Last modified November 23 17:09 EST 2009. Contains 167438 sequences.


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