210143

Properties

Appears in sequences

• a(1) = 1; thereafter a(n) is always the smallest integer > a(n-1) not leading to a contradiction, such that any six consecutive digits in the sequence sum up to a prime.at n=32A152606
• Least Ramanujan prime beginning a run of n Ramanujan primes associated with a sharp prime gap.at n=5A177804
• Prime numbersat n=18821