A209193 Safe primes that are also highly cototient numbers.

23, 47, 59, 83, 167, 839, 2099, 5879, 6719, 23099, 27299, 180179, 414959, 420419, 628319, 660659, 840839, 1141139, 1681679, 2042039, 2277659, 4084079, 5525519, 5705699

Offset: 1

Author

N. J. A. Sloane, Mar 05 2012

Keywords

• nonn
• more

Links

• PrimeFan, Listing of Esoteric Integer Sequences
• PrimeFan, Esoteric Integer Sequences [Cached copy]

Crossrefs

A005385 intersect A100827.

Extensions

a(19)-a(24) calculated from the b-file at A100827 by Amiram Eldar, Apr 09 2020