4194301

Properties

Appears in sequences

• Largest prime <= 2^n.at n=21A014234
• a(n) = 2^n - 3.at n=22A036563
• Primes of the form 2^k - 3.at n=9A050415
• Primes -p+2^n with smallest p prime, arising in A057674.at n=21A057674
• New record highs reached in A060030.at n=41A060482
• Primes p such that p+3 == 0 (mod phi(p+3)).at n=10A067932
• Smallest prime with exactly n consecutive ones in the longest run of ones in its binary expansion.at n=19A090593
• Smallest number having in binary representation a prefix of length n that is also a suffix of its successor.at n=21A091270
• Smallest prime factor of 2^n-3.at n=20A093810
• Largest prime factor of 2^n-3.at n=20A093817
• A Horadam-Jacobsthal sequence.at n=21A101622
• Largest prime <= 4^n.at n=10A104089
• Prime nearest to 2^n. In case of a tie, choose the smaller.at n=22A117387
• Largest prime factor of the odd Catalan number A038003(n).at n=19A120274
• Primes in the new Mersenne conjecture; odd primes of the form 2^k+-1 or 4^k+-3.at n=22A122834
• Least prime of the form x^n-x-1.at n=20A126439
• Primes of the form 4^k - 3.at n=6A135535
• a(n) = a(n-1) + 2*a(n-2) - 2*a(n-3).at n=40A136252
• a(n) = 4^(n+1) - 3.at n=10A141725
• A007318 * A143098.at n=22A143100