57041

Properties

Appears in sequences

• Least prime factor of concatenation of first n odd numbers.at n=43A138965
• Number of 2 X 2 matrices having all terms in {1,...,n} and determinant >= 2n.at n=19A211062
• Let p = A002145(n) be the n-th prime of the form 4k+3, then a(n) is the smallest number such that p is the smallest prime of the form 4k+3 for which 4*a(n)+2-p is prime.at n=45A217696
• 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=14A330339
• Union of 2, A282178, and A330339.at n=51A330554
• Prime numbersat n=5784