- Euler's totient. Jordan's
totient is a
generalization of Euler's. The
cototient of n is
defined as n − φ(n). It
counts the
number of
positive integers...
- In
number theory, a
branch of mathematics, a
highly cototient number is a
positive integer k {\displaystyle k}
which is
above 1 and has more solutions...
- –
Proth prime, both a left- and right-truncatable
prime 3149 –
highly cototient number 3150 = 153 - 152 3155 –
member of the Mian–Chowla
sequence 3159...
-
first twelve integers 6081 - sum of the
first 54
primes 6089 –
highly cototient number 6095 –
magic constant of n × n
normal magic square and n-Queens...
- many Star Trek episodes. 47 is a safe prime, an
isolated prime, a
highly cototient prime, an
Eisenstein prime, a
Gaussian prime, and a
Lucas prime. 47 is...
-
function zero 2099 –
Mertens function zero, super-prime, safe prime,
highly cototient number 2100 –
Mertens function zero 2101 –
centered heptagonal number...
- form 2p-1 5244 = 222 + 232 + … + 292 = 202 + 212 + … + 282 5249 –
highly cototient number 5253 –
triangular number 5279 –
Sophie Germain prime, twin prime...
-
wickets taken in first-class
cricket by
Wilfred Rhodes 4199 –
highly cototient number,
product of
three consecutive primes 4200 –
nonagonal number, pentagonal...
- is the sum of
three consecutive primes (107 + 109 + 113), and a
highly cototient number. 330 = 2 × 3 × 5 × 11. 330 is sum of six
consecutive primes (43...
-
prime with no
imaginary part and real part of the form 3n − 1. a
highly cototient number. the
number of
primes that are right-truncatable. a super-prime...
