50123

Properties

Appears in sequences

• Balanced primes (A090403) of index 3.at n=26A096707
• Increasing sequence of primes such that sum of any two neighbor terms is a prime power (power of prime).at n=7A114895
• Primes p such that |100-p|, |1000-p|, |10000-p| and |100000-p| are also primes.at n=32A126021
• Greater of a pair of closest (n-digit) distinct primes that add up to 10^n.at n=4A137612
• Irregular table with first row containing the single term 3; in the n-th row, n>=2, we list in increasing order those d=2^(n+1)-a, for each term a in all the preceding rows, such that d is prime.at n=42A152871
• Primes of the form 11*k^2-11*k+7.at n=32A267290
• Numbers n such that both n and n^2 contain "123" as a substring.at n=3A268278
• Primes p such that both p and p^2 contain "123" as a substring.at n=0A268279
• The least k for which A329697(k) = n; Position of first occurrence of n (and also records) in A329697.at n=12A334099
• a(n) is the smallest number k such that A362881(k) = n.at n=18A362909
• Prime numbersat n=5147