777149

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=2A101036
• Least k such that k*2^m - 1 has a covering set with precisely n primes.at n=1A206430
• Odd integers n such that for every integer k>0, n*2^k-1 has a divisor in the set {3, 5, 7, 13, 19, 37, 73}.at n=0A244071
• Odd numbers n not congruent to 1 mod 6 and that are not perfect powers such that for all k >= 1 the numbers n*4^k - 1 are composite.at n=3A251757
• Least k such that k*2^m - 1 has a covering set of modulus 2*n, or 0 if no such value exists.at n=17A258154