4063201

Appears in sequences

• Numbers that are a product of distinct Mersenne primes (elements of A000668).at n=32A046528
• Sum of divisors of n, sigma(n) (A000203), is a power of number of divisors of n, d(n) (A000005).at n=20A051281
• Numbers n such that sigma(n) is a prime power (A025475).at n=33A065523
• Semiprimes that are a product of Mersenne primes.at n=18A144482
• Semiprimes that are a product of distinct Mersenne primes.at n=14A144856
• Nonprime numbers k such that sum of the divisors of k is a power of 2.at n=25A254603
• a(n) is the largest number k such that sigma(k) = 2^n or 0 if no such k exists.at n=22A295043