215656441

Appears in sequences

• Least common multiple of integers less than and prime to n.at n=29A038610
• Product of 7 successive primes.at n=3A046325
• Product of primes < n that do not divide n.at n=29A066838
• Denominator of Sum_{1<=k<=n, gcd(k,n)=1} 1/k.at n=29A069220
• Product of prime(n) primes starting from prime(n).at n=3A075068
• Product of primes greater than the greatest prime factor of n but not greater than n.at n=29A083722
• Smallest number of the form n*k + 1 that is divisible by all the phi(n) numbers less than n and relatively prime to n.at n=28A084715
• a(1) = 1; a(n) = product of n successive primes beginning with n if n is prime else product of n successive composite numbers beginning with n.at n=6A110342
• Denominator of 1^n/n + 2^n/(n-1) + 3^n/(n-2) + ... + (n-1)^n/2 + n^n/1.at n=28A120487
• a(n) = product of those positive integers which are coprime to both n and n+1 and which are <= n.at n=29A124740
• Least k such that the x^n coefficient of cyclotomic polynomial Phi(k,x) has the largest possible magnitude.at n=36A138475
• The product of primes <= n that are strongly prime to n.at n=31A181836
• Terms of A001783 which are smaller than the preceding term in that sequence.at n=12A193340
• Product of positive odd integers smaller than n and relatively prime to n.at n=29A209388
• Denominator of Sum_{i=1..n} n^i/i.at n=29A237873
• Denominators of constants A(a) related to the asymptotic LCM of arithmetic progressions a*n+b (a and b coprime).at n=29A249226
• Intersection of A046346 (numbers that are divisible by the sum of their prime factors, counted with multiplicity) and A097889 (numbers that are products of at least two consecutive primes).at n=5A266955
• Highly composite 7-rough numbers: numbers that are not divisible by any prime smaller than 7 and whose number of divisors reaches a record.at n=17A343737
• Product of the first n primes greater than or equal to n.at n=7A374006
• Denominator of sum of reciprocals of all prime divisors of all positive integers <= n.at n=28A380315