3573570

Appears in sequences

• Numbers with exactly 7 distinct prime divisors {2,3,5,7,11,13,17}.at n=6A147574
• Largest number which is not the sum of an n-almost prime and a prime.at n=3A152165
• Numerator of the harmonic mean of the first n primes.at n=6A250130
• a(0) = 2, for n > 0, a(n) = a(n-1)*A242378(n,a(n-1)), where A242378(n,a(n-1)) shifts the prime factorization of a(n-1) n primes towards larger primes with A003961.at n=3A285101
• Totient superdeficient numbers: numbers n > 1 such that s(n)/n < s(m)/m for all m < n, where s(n) is the sum of iterated phi(n) (A092693).at n=18A291173
• Numbers m that set records for the ratio A045763(n)/n.at n=44A294492
• a(n) is the smallest square pyramidal number divisible by exactly n square pyramidal numbers.at n=8A359094
• a(n) is the smallest square pyramidal number with exactly n distinct prime factors.at n=7A359229
• Common difference corresponding to increasing arithmetic progression of at least n >= 2 primes whose first term is A284708(n); a(1) = 1.at n=13A361492
• Numbers k that are neither squarefree nor prime powers such that A119288(k) <= k/A007947(k) < A053669(k) and k has a primorial kernel but is not a product of primorials.at n=25A369419