A099184 - OEIS

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A099184

Heavy primes: primes p such that p-1 has more than 2 divisors with multiplicity.

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; refs; listen; history; text; internal format)

OFFSET

2,1

COMMENTS

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

LINKS

Harvey P. Dale, Table of n, a(n) for n = 2..1000

MATHEMATICA

Select[Prime[Range[70]], PrimeOmega[#-1]>2&] (* Harvey P. Dale, May 28 2012 *)

PROG

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

CROSSREFS