89491

Properties

Appears in sequences

• a(1) = 2; for n > 1, a(n) is the smallest prime > a(n-1) such that each successive digit in the concatenation of terms (that does not follow 9) is greater than the previous digit.at n=20A068827
• Primes of the form Sum_{k=1..n} phi(prime(k)).at n=34A101302
• (1,2,3) Jasinski-like positive power sequence.at n=14A113914
• Numbers such that pre- and post-concatenating 7, 13 and 31 results in six primes.at n=5A125197
• Least positive integer k such that both k and k*n belong to the set {m>0: prime(m)+2 is prime with prime(prime(m)+2) = prime(prime(m))+6}.at n=20A261528
• Prime numbersat n=8665