50909

Properties

Appears in sequences

• Least prime in A031932 (lesser of 14-twins) whose distance to the next 14-twin is 6*n.at n=35A052356
• a(n) = Smallest nontrivial number k > 9 such that |first (leftmost) decimal digit of k - second digit + third digit - fourth digit ...| = n.at n=23A060982
• Smallest number m such that first digit - second digit + third digit - fourth digit ... (of m) = n.at n=23A061479
• a(n) = Smallest nontrivial number k > 9 such that first (leftmost) digit - second digit + third digit - fourth digit ... of k = n.at n=23A061882
• Prime means of 12 horizontal, vertical and main diagonal sums associated with primes in A094458.at n=22A094459
• Prime numbers obtained by inserting a 0 between each pair of adjacent digits of a prime number > 10.at n=37A119680
• Convolution square of A001157 (the sum of squared divisors).at n=14A175705
• Primes congruent to 5 (mod 504).at n=37A228093
• Primes formed by an m-digit prime concatenated with its last (m-1) digits, for m > 1.at n=23A252667
• Centered 13-gonal (or tridecagonal) primes.at n=18A262493
• Primes equal to a heptagonal number plus 1.at n=29A285791
• Boustrophedon primes: write the numbers 0, 1, 2, 3, ... in a triangle on a square grid in the boustrophedon manner, ending a row when a prime is reached; sequence lists primes that appear in the zeroth column.at n=12A330339
• Union of 2, A282178, and A330339.at n=49A330554
• Number of unlabeled acyclic digraphs with n arcs and a global source and sink.at n=11A350492
• Primes having only {0, 5, 9} as digits.at n=9A385769
• Primes having only {0, 2, 5, 9} as digits.at n=35A386050
• Primes having only {0, 5, 6, 9} as digits.at n=19A386078
• Primes having only {0, 5, 7, 9} as digits.at n=37A386080
• Primes having only {0, 5, 8, 9} as digits.at n=18A386081
• Prime numbersat n=5214