999999893

Appears in sequences

• Smallest prime of the form 10^k - prime(n), or 0 if no such prime exists.at n=27A090289
• Largest n-digit prime whose digit reversal is also prime.at n=8A114019
• SanD-140 primes: primes p such that p+d is also prime and sum of digits A007953(p(p+d)) = d, with d = 140.at n=0A307478
• Smallest SanD-d prime p (such that p + d is also prime and digit sum A007953(p(p+d)) = d) with d = 14 + n*18, n >= 0, resp. d = 5 for n = -1.at n=8A307480
• a(n) is the smallest prime q such that q + prime(n) is of form 10^k or 2*10^k, or 0 if no such prime exists.at n=27A382035