220523

Appears in sequences

• Odd numbers m such that for all 2^k < m the numbers m + 2^k, m - 2^k, m*2^k + 1, and m*2^k - 1 are composite, with k >= 1.at n=31A256163
• a(n) is the largest m such that p = n-th popular prime = A385503(n) is popular on the interval [2,m].at n=8A289663