103997

Properties

Appears in sequences

• a(n+1) is the least k such that 1/(a(n)+1) + 1/(a(n)+2) + ... + 1/k > 1, with a(1) = 1.at n=11A180224
• Primes which are the concatenation of two primes in exactly three ways.at n=17A238499
• Primes p such that exactly five numbers among all circular permutations of the digits of p are prime.at n=11A344629
• Primes which satisfy the requirements of A380943 in more than one way.at n=32A383810
• Primes which satisfy the requirements of A380943 in exactly three ways.at n=1A383812
• Prime numbersat n=9933