737279

Properties

Appears in sequences

• Smallest initial value k that reaches 1 in n steps when iterating the map m -> rad(m)-1, where rad(m) is the squarefree kernel of m (A007947).at n=32A075426
• Primes p such that 5 is the largest of all prime factors of the numbers between p and the next prime (cf. A052248).at n=23A080185
• Smaller member of a twin prime pair such that the sum sets a record for number of prime divisors (counted with multiplicity).at n=10A086827
• 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=15A164291
• Primes of the form 45*2^n - 1.at n=8A230168
• Three-column array read by rows: the first row consists of the first two primes, p = 2 and q = 3, and their sum s = p + q = 5; afterwards the (n+1)-st row consists of the smallest pair of consecutive primes whose sum is a multiple of the sum in the n-th row followed by their sum.at n=33A284669
• Prime numbersat n=59323