- free dictionary. In mathematics, and more
particularly in
number theory,
primorial,
denoted by "#", 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...
-
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...
- 5, and 7), and thus a
primorial,
where it is the
least common multiple of
these four
prime numbers. 210 is the
first primorial number greater than 2 which...
-
before 30,001. 30029 =
primorial prime 30030 =
primorial 30031 =
smallest composite number which is one more than a
primorial 30203 = safe
prime 30240...
-
occurs thrice,
since adding 61 to
either the tenth,
twelfth or
seventeenth primorial gives a
prime number (namely 6,469,693,291; 7,420,738,134,871; and 1,922...
-
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...
-
tenth prime number, and the
fifth primorial prime. 29
forms a twin
prime pair with thirty-one,
which is also a
primorial prime. Twenty-nine is also the sixth...
-
primorial must be at
least 1·2·3·5·7·11·13, and 7×11×13 = 1001.
Fuller also
refers to
powers of 1001 as
Scheherazade numbers. The
smallest primorial containing...
- 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...
