31357

Properties

Appears in sequences

• Prime(n)*...*a(n) is the least product of consecutive primes which is non-deficient.at n=38A007686
• Prime(n)*...*a(n) is the least product of consecutive primes which is abundant.at n=38A007708
• Numbers k such that the continued fraction for sqrt(k) has period 91.at n=21A020430
• Primes with consecutive digits that differ exactly by 2.at n=14A048399
• List of primitive prime divisors of the numbers 4^n-3^n (A005061) in their order of occurrence.at n=36A129737
• Prime numbers with gaps larger than 18 towards both neighboring primes.at n=17A163111
• Primes of the form 10n^2 - 3.at n=14A201962
• Primes p such that every suffix of the base-5 representation of p is a prime.at n=47A278697
• a(1) = 15; for n > 1, a(n)^2 is the smallest square that begins with a(n-1) in base 6.at n=18A336251
• Number of reversed integer partitions of 2n whose skew-alternating sum is 0.at n=27A357640
• Numbers k such that k + 4, k + 6, k + 9, k + 10, and k + 14 are all semiprimes, where 4, 6, 9, 10, 14 are the first 5 semiprimes.at n=24A365240
• Prime numbersat n=3380