A180247 - cp's OEIS frontend

A180247 Prime Brier numbers: primes p such that for all k >= 1 the numbers p2^k + 1 and p2^k - 1 are composite.

n	a(n)
1	10439679896374780276373
2	21444598169181578466233
3	105404490005793363299729
4	178328409866851219182953
5	239365215362656954573813
6	378418904967987321998467
7	422280395899865397194393
8	474362792344501650476113
9	490393518369132405769309

[10439679896374780276373, 21444598169181578466233, 105404490005793363299729, 178328409866851219182953, 239365215362656954573813, 378418904967987321998467, 422280395899865397194393, 474362792344501650476113, 490393518369132405769309]

cp's OEIS Frontend

A180247 Prime Brier numbers: primes p such that for all k >= 1 the numbers p2^k + 1 and p2^k - 1 are composite.

Table of values

List of values

cp's OEIS Frontend

A180247 Prime Brier numbers: primes p such that for all k >= 1 the numbers p*2^k + 1 and p*2^k - 1 are composite.

Table of values

List of values

A180247 Prime Brier numbers: primes p such that for all k >= 1 the numbers p2^k + 1 and p2^k - 1 are composite.