255127

Properties

Appears in sequences

• Numerator of h(n+5) - h(n) where h(n) = Sum_{k=1..n} (1/k) are the Harmonic numbers.at n=25A189998
• Smallest prime factor of 2^(2^n+2) + 3.at n=8A248802
• Primes formed by the concatenation of 2^k-1 and 2^(k-1)-1.at n=4A298613
• Prime numbersat n=22451