469762049

Properties

Appears in sequences

• Smallest prime of form 2^n*k + 1.at n=26A035089
• Primes of form 7*2^n+1.at n=5A050527
• Minimal 2^n safe-primes: a(n) = 2^n*A051886(n) + 1 (a prime number).at n=26A051900
• a(n) is the least prime p such that p-1 is divisible by 2^n and not by 2^(n+1).at n=26A057775
• Primes p such that cototient(totient(p)) = A070556(p) is a power of 2.at n=23A070806
• Smallest prime p with bigomega(p-1)=n, where bigomega(m)=A001222(m) is the number of prime divisors of m (counted with multiplicity).at n=27A073919
• Primes of the form 2^r*7^s + 1.at n=24A077498
• a(0) = 8; for n>0, a(n) = 2*a(n-1) - 1.at n=26A083686
• Duplicate of A051900.at n=26A084706
• Least prime of the form 1 + p*2^n, where p is an odd prime.at n=25A134854
• a(n) = 7*4^n+1.at n=13A199207
• Primes p that give record exponents of 2 in p^2 - 1 (A091282).at n=18A233930
• Number of (not necessarily maximal) cliques in the n-folded cube graph.at n=24A295921
• a(n) = 7*2^n + (-1)^n.at n=26A321483
• Primes of the form q*2^h + 1, where q is a Mersenne prime.at n=18A336117
• Primes p such that the odd part of p - 1 is upper-bounded by the dyadic valuation of p - 1.at n=22A361180
• Primes p such that valuation(p-1,2) is a record.at n=17A370606
• a(n) = 2^n*t + 1 where t is the least x such that there exists an r in the range 2 <= r <= x+1 that is coprime to 2^n*x + 1 and has multiplicative order 2^n modulo 2^n*x + 1.at n=24A370879
• Prime numbersat n=24843812