- In
number theory, a
noncototient is a
positive integer n that
cannot be
expressed as the
difference between a
positive integer m and the
number of coprime...
- number, and an
untouchable number. 326 = 2 × 163. 326 is a nontotient,
noncototient, and an
untouchable number. 326 is the sum of the 14
consecutive primes...
-
southern Alberta. 404 = 22 × 101,
Mertens function returns 0, nontotient,
noncototient,
number of
integer partitions of 20 with an
alternating permutation....
- societies.) 10 is a
composite number, and a
happy number. 10 is the
smallest noncototient number.
There are
exactly 10
small Pisot numbers that do not
exceed the...
- of
squares of
divisors of 19,
Mertens function returns 0, nontotient,
noncototient. 364 = 2 2 × 7 × 13 {\displaystyle 364=2^{2}\times 7\times 13} , tetrahedral...
- any number. It is the
first untouchable number larger than 2 and 5. a
noncototient since it is not
equal to x − φ(x) for any x . a
vertically symmetrical...
-
between any
integer and the
total of
coprimes below it,
making it a
noncototient. 100 has a
reduced totient of 20, and an
Euler totient of 40. A totient...
- with
exactly 122
integers with
common factors below it,
making 122 a
noncototient. 122 is a semiprime. φ(122) = φ(σ(122)). Sloane, N. J. A. (ed.). "Sequence...
- subquotient. 26 is the
smallest number that is both a
nontotient and a
noncototient number. 26 is the
number of
permutations of {a, b, c, d, e} with only...
-
whose digit sum in
decimal is the same as it is in binary. 222 is a
noncototient,
meaning that it
cannot be
written in the form n − φ(n)
where φ is Euler's...
