3319733

Properties

Appears in sequences

• a(1) = 9; a(2n) = smallest prime that is a right concatenation of a(2n-1) and a number with no insignificant zeros and a(2n+1) = smallest prime ending in ( the least significant digits) a(2n). Alternate left and right concatenation yielding primes.at n=6A069621
• a(1) = 9; a(2n) = smallest prime starting (most significant digits) with a(2n-1). a(2n+1) = smallest prime ending (least significant digits)in a(2n).at n=6A069636
• Primes which are the concatenation of two primes in exactly four ways.at n=20A238500
• Prime numbersat n=238216