131713

Properties

Appears in sequences

• Largest prime factor of 3^(2n+1) - 1.at n=24A002591
• Primes obtained as a concatenation p,q,p where p and q are successive primes and p<q.at n=1A068684
• a(n) = 6n^3 + 1, solution z in Diophantine equation x^3 + y^3 = z^3 - 2. It may be considered a Fermat near miss by 2.at n=27A163827
• Primes of the form abcdabcd..abcdab.at n=23A187114
• Primes of the form 6n^3+1.at n=6A201179
• Look and say sequence starting with 373.at n=1A208834
• Prime numbersat n=12303