A184856 Primes of the form floor(k*e/(e-1)).

3, 7, 11, 17, 23, 31, 37, 41, 47, 53, 61, 71, 79, 83, 101, 107, 109, 113, 131, 137, 139, 151, 167, 181, 191, 193, 197, 199, 211, 223, 227, 229, 251, 257, 281, 283, 311, 313, 317, 349, 359, 367, 373, 379, 389, 397, 401, 409, 419, 431, 433, 439, 449, 457, 461, 463, 479, 487, 491, 499, 503, 509, 523, 541, 547, 563, 569, 571, 577, 593, 599, 601, 607, 613, 631, 643, 647, 653, 659, 661, 673, 677, 683, 691, 719, 727, 743, 751, 757, 773, 787, 797, 809, 811, 821, 827, 857, 859, 863, 877, 881, 887, 911, 919, 941, 947

Offset: 1

Author

Clark Kimberling, Jan 23 2011

Keywords

• nonn

Comments

Primes in A054385. - Bill McEachen, Nov 04 2021

Examples

			See A077545.
		

Crossrefs

Cf. A077545, A184855, A054385.

Programs

Mathematica

(See A077545.)

PARI

select( {is_A184856(n, c=1-exp(-1)) = isprime(n) && for(k=floor(n*c),ceil((n+1)*c), k\c==n && return(1))}, [1..999]) \\ M. F. Hasler, Jul 12 2024

Formula

Complement of A077545 in the primes: A000040 \ A077545. - M. F. Hasler, Jul 12 2024