4076863487

Appears in sequences

• Smaller term of a pair of twin primes such that prime factors of their average are only 2 and 3.at n=16A059960
• Lesser member p of a twin prime pair such that p+1 is 3-smooth.at n=17A078883
• Smaller member of a twin prime pair such that the sum sets a record for number of prime divisors (counted with multiplicity).at n=18A086827
• a(n) = p is the first twin prime (p, p+2) for which p+1 has n prime factors (n>=2, multiplicity counted).at n=27A164291
• Smaller member p of a twin prime pair (p, p+2) such that the sum p+(p+2) is a fifth power: 2*(p+1) = k^5 for some integer k.at n=0A173255
• Smallest lower twin prime number which sums with its upper twin prime to a perfect n-th power.at n=4A195421
• Primes p such that all the composite numbers between p and its next prime have no more than 2 distinct prime factors.at n=36A303436
• a(n) is the least prime of the form 2^j*3^k - 1, j > 0, k > 0, j + k = n. a(n) = 0 if no such prime exists.at n=27A337437
• Numbers k for which omega(k)*omega(k + 1)*omega(k + 2) = 2 where omega = A001221.at n=35A391044