262139

Properties

Appears in sequences

• Largest prime <= 2^n.at n=17A014234
• a(n) = prime(1000 * n).at n=22A031922
• Primes -p+2^n with smallest p prime, arising in A057674.at n=17A057674
• Smallest prime with exactly n consecutive ones in the longest run of ones in its binary expansion.at n=14A090593
• Largest prime <= 4^n.at n=8A104089
• Largest prime <= 8^n.at n=5A104093
• Triangle read by rows n>=0: the largest prime <= m^n+2 in columns m=3..n+3.at n=26A118132
• Length of the longest perfect parity pattern with n columns.at n=49A118141
• Largest prime factor of the odd Catalan number A038003(n).at n=15A120274
• Primes of the form n^9-n-1.at n=1A126438
• Largest prime <= 2^((n+1)/2).at n=34A133225
• a(n) = largest prime <= the smallest positive integer with exactly n divisors.at n=17A145343
• Primes of the form 2^n-5.at n=6A156560
• Partial sums of A162255.at n=30A164053
• Numbers n such that n and n+5 are prime powers.at n=12A164573
• a(n) = 2^n - 5.at n=18A168616
• a(n) = round((2^n - n - 1)/4).at n=19A173010
• a(n) is the smallest prime p>2 such that there are 2*n or 2*n+1 positive integers m for which the exponents of 2 and p in the prime power factorization of m! are both powers of 2.at n=15A177378
• Primes of the form 2^t-2^k-1, k>=1.at n=48A181741
• Monotonic ordering of nonnegative differences 4^i-5^j, for 40>= i>=0, j>=0.at n=42A192161