- free dictionary. In mathematics, and more
particularly in
number theory,
primorial,
denoted by "pn#", is a
function from
natural numbers to
natural numbers...
- In mathematics, a
primorial prime is a
prime number of the form pn# ± 1,
where pn# is the
primorial of pn (i.e. the
product of the
first n primes). Primality...
-
adding some
subsets of its
divisors (e.g., 5, 10 and 15)
equals 30. A
primorial. A
Harshad number in decimal.
Divisible by the
number of
prime numbers...
-
numbers are
integers of the form En = pn # + 1,
where pn # is the nth
primorial, i.e. the
product of the
first n
prime numbers. They are
named after the...
-
system with
successive prime numbers as radix,
whose place values are
primorial numbers,
considered by S. S. Pillai,
Richard K. Guy (sequence A049345...
- of the form 2(5 − 1)(25 − 1) by the Euclid-Euler theorem. 31 is also a
primorial prime like its twin
prime (29), as well as both a
lucky prime and a happy...
- zero 2309 –
primorial prime, twin
prime with 2311,
Mertens function zero,
highly cototient number 2310 –
fifth primorial 2311 –
primorial prime, twin...
- 510 = the
product of the
first seven prime numbers, thus the
seventh primorial. It is also the
product of four
consecutive Fibonacci numbers—13, 21,...
- {(p_{r-1}\#)^{k}}{J_{k}(p_{r}\#)}}\qquad k=2,3,\ldots .} Here pn# is the
primorial sequence and Jk is Jordan's
totient function. The
function ζ can be represented...
-
before 30,001. 30029 =
primorial prime 30030 =
primorial 30031 =
smallest composite number which is one more than a
primorial 30203 = safe
prime 30240...
