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

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

Cf. A059456.

Sequence in context: A054476 A319504 A339912 * A098095 A249953 A180530

Adjacent sequences: A099181 A099182 A099183 * A099185 A099186 A099187

Keyword

nonn

Author

Cino Hilliard, Nov 15 2004

Status

approved