19709529840
domain: N
Appears in sequences
- a(n) = lcm{prime(i)-1, i=1..n}.at n=23A058254
- a(n) = lcm{prime(i)-1, i=1..n}.at n=24A058254
- Distinct values of lcm_{i=1..n} (p(i)-1), where p() are the primes.at n=12A058255
- Period of reciprocal of the primorials.at n=21A092281
- Period of reciprocal of the primorials.at n=22A092281
- a(n) = denominator(Sum_{k=1..n} 1/(prime(k)-1)).at n=22A128646
- a(n) = denominator(Sum_{k=1..n} 1/(prime(k)-1)).at n=23A128646
- a(n) = denominator(Sum_{k=1..n} (-1)^(k+1)/(prime(k)-1)).at n=22A128648
- a(n) = denominator(Sum_{k=1..n} (-1)^(k+1)/(prime(k)-1)).at n=23A128648
- Smallest number m with property that 2^m-1 is divisible by first n odd primes.at n=23A155747
- a(n) is the multiplicative order of the n-th prime number q modulo (q-1)#.at n=24A333992