- In
number theory, a
deficient number or
defective number is a
positive integer n for
which the sum of
divisors of n is less than 2n. Equivalently, it...
- of 69 are both
Gaussian primes. In
number theory, 69 is a
deficient number,
arithmetic number and a
congruent number. In
reference to 69ing, a **** position...
- 138. 777 is also: An
extravagant number, a
lucky number, a
polite number, and an
amenable number. A
deficient number,
since the sum of its
divisors is...
-
higher prime. a
deficient number, a
lucky number, a bell
number (i.e., the
number of
partitions for a set of size 4), a
pentatope number, and a repdigit...
- 1291. It is
classified as an
apocalyptic power, a
deficient number, and an evil
number: The
number 1289 is
called an
apocalyptic power because 21289 contains...
- itself. 261 is a
deficient number,
since 1 + 3 + 9 + 29 + 87 = 129 < 261. 261 is
nonagonal number,
unique period in base 2, and the
number of
possible unfolded...
- fifty-five) is the
natural number following 154 and
preceding 156. 155 is: a
composite number a semiprime. a
deficient number,
since 1+5+31=37<155. odious...
- the
natural number following 168 and
preceding 170. 169 is an odd
number, a
composite number, and a
deficient number. 169 is a
square number: 13 × 13 =...
-
primitive abundant number is an
abundant number whose proper divisors are all
deficient numbers. For example, 20 is a
primitive abundant number because: The...
-
integer with a
positive divisor other than one or
itself 182 is a
deficient number, as the sum of its
proper divisors, 154, is less than 182 182 is a...
