211711

Properties

Appears in sequences

• Describe previous term from the right (method A - initial term is 7).at n=3A022511
• a(1) = 17 and then the smallest prime that is obtained by placing digits on both sides of the previous term. Or smallest prime that encompasses a(n-1).at n=2A075602
• Numbers to which Mersenne primes 2^p-1 can be congruent mod k! (for k > 1).at n=26A145038
• Prime numbersat n=18952