39989

Properties

Appears in sequences

• Number of ordered 5-tuples of integers from [ 2,n ] with no global factor.at n=19A015651
• Primes at which sum of digits strictly increases.at n=22A061248
• Smallest prime with digit sum n, or 0 if no such prime exists.at n=37A067180
• The smallest prime with a possible given digit sum.at n=25A067523
• Smallest prime whose digital sum is equal to the n-th composite number, or 0 if no such prime exists.at n=24A073867
• Primes of the form n^2 - 11.at n=24A091272
• Primes p such that 2*p+1 and ((2*p+1)^2 + 1)/2 = p^2 + (p+1)^2 are primes.at n=39A098717
• Largest prime p such that the sum of n consecutive primes plus p is equal to (n+1)^3.at n=33A100572
• Primes with digit sum = 38.at n=0A106772
• Smallest prime whose digital sum is equal to the n-th composite number not congruent to 0 (modulo 3).at n=13A111380
• Least prime p with digit sum A047235(n).at n=12A152652
• Primes that remain prime when a single digit 9 is inserted between any two consecutive digits or as the leading or trailing digit.at n=28A215421
• Primes related to the strictly increasing subsequence of A053666.at n=44A230041
• a(n) is the smallest number k such that digsum(k)/tau(k) = prime(n) where tau(k) is the number of divisors of k and digsum(k) is the sum of the digits of k.at n=7A240915
• Lesser of consecutive primes whose average is of the form k*(k+2), for some integer k.at n=35A242385
• a(n) is the smallest prime number, with sum of digits equals n and a(n) is greater than previous nonzero terms, except if this is not possible in which case a(n)=0.at n=37A282342
• Primes p such that, if q is the next prime, p^2 + q is a prime times a power of 10.at n=34A352852
• a(n) is the first member of A106843 with sum of digits n.at n=36A361831
• Primes having only {3, 8, 9} as digits.at n=32A385792
• Prime numbersat n=4203