44839

Properties

Appears in sequences

• Prime number spiral (clockwise, South spoke).at n=34A054566
• Position at which increasing values of the Improperly Reduced Fibonacci Sequence (A058981) occur.at n=22A058983
• a(n) = sum_{k=1..n} prime(k)*prime(k+1).at n=21A074745
• Noncomposite numbers in the northern ray of the Ulam spiral as oriented on the March 1964 cover of Scientific American.at n=18A168023
• Primes of the form Sum_{k=1..n} prime(k)*prime(k+1).at n=0A197421
• a(n) is the smallest prime of the form Sum_{j=1..k} prime(j)*prime(j+1)*...*prime(j+n).at n=0A197614
• Smallest of four consecutive primes whose average is a triangular number.at n=25A226155
• a(n) is a prime number that cannot be the center term of a length 3 arithmetic progression prime group with a common difference whose number of runs in binary expansion is 2.at n=39A231387
• Primes that are sums of a sequence of consecutive terms of A006094.at n=20A340537
• Primes p such that (p^128 + 1)/2 is prime.at n=28A341230
• Prime numbersat n=4659