A153433 Numbers m such that all 11 numbers 10^k*m+1; k=0,1,...,9 & 10 are prime.

89468493268, 342174928102, 1124855005456, 1183450662310, 1885504856592, 2425861640748, 2926121345812, 3713879215312, 3984048347706, 4181062989166, 4335021717418, 5232993739512, 6009549731752, 6406772991528, 7451945623752, 8329610667490, 8533933744882, 9374871820930, 9425264464140, 9578838492160

Offset

1,1

Comments

If m & n are in the sequence, k<11 and r=m*n*10^k -1 is prime then r has at least k+1 representations of the form p*q-(p+q)where p & q are prime.

Links

Table of n, a(n) for n=1..20.

Carlos Rivera, Two Bergot questions

Crossrefs

Cf. A153431, A153432.

Sequence in context: A172538 A045519 A283459 * A234386 A015417 A217468

Adjacent sequences: A153430 A153431 A153432 * A153434 A153435 A153436

Keyword

nonn

Author

Farideh Firoozbakht, Apr 02 2009

Extensions

A153433 a(3)-a(20) from Don Reble, Jul 06 2022

Status

approved