1830187

Appears in sequences

• Riesel numbers n (n*2^k-1 is composite for all k>0, n odd) that have a covering set.at n=14A101036
• Odd integers m such that for every integer k>0, m*2^k-1 has a divisor in the set {3, 5, 7, 13, 37, 73, 109}.at n=0A244074