In number theory, a narcissistic number (also known as a pluperfect digital invariant (PPDI), an Armstrong number (after Michael F. Armstrong) or a plus...

Narcissistic personality disorder (NPD) is a personality disorder characterized by a life-long pattern of exaggerated feelings of self-importance, an excessive...

= 407); narcissistic number Sum of three consecutive primes (131 + 137 + 139) Mertens function returns 0 Harshad number Lazy caterer number HTTP status...

Zeisel number 54688 = 2-automorphic number 54748 = narcissistic number 54872 = 383, palindromic in base 9 (832389) 54901 = chiliagonal number 55296 =...

9474 – Narcissistic number in base 10 9479 – Sophie Germain prime 9496 – Telephone/involution number 9511 - prime number 9521 - prime number 9533 - prime...

a regular 18-polygon 1633 = star number 1634 = the smallest four-digit Narcissistic number in base 10 1635 = number of partitions of 56 whose reciprocal...

harmonic divisor number 8191 – Mersenne prime 8192 = 213 8208 – base 10 narcissistic number as 84 + 24 + 04 + 84 = 8208 8219 – twin prime with 8221 8221 – super-prime...

A prime number (or a prime) is a natural number greater than 1 that is not a product of two smaller natural numbers. A natural number greater than 1 that...

month, the number of pairs of rabbits is equal to the number of mature pairs (that is, the number of pairs in month n – 2) plus the number of pairs alive...

{\displaystyle 153=1^{3}+5^{3}+3^{3}} , it is a 3-narcissistic number, and it is also the smallest three-digit number which can be expressed as the sum of cubes...

"Narcissistic Cannibal" is a song by American nu metal band Korn, released as the second single from their tenth studio album, The Path of Totality. It...

Arithmetic dynamics Automorphic number Dudeney number Factorion Happy number Kaprekar's constant Meertens number Narcissistic number Perfect digit-to-digit invariant...

narcissism Narcissistic number, integer expressible as the sum of the (number of digits)th power of each of its digits Narcissistic rage and narcissistic injury...

mathematics, a Mersenne prime is a prime number that is one less than a power of two. That is, it is a prime number of the form Mn = 2n − 1 for some integer...

Arithmetic dynamics Dudeney number Factorion Happy number Kaprekar's constant Kaprekar number Meertens number Narcissistic number Perfect digit-to-digit invariant...

the number 1 differently than larger numbers, sometimes even not as a number at all. Euclid, for example, defined a unit first and then a number as a...

b} . Arithmetic dynamics Dudeney number Factorion Happy number Kaprekar's constant Kaprekar number Narcissistic number Perfect digit-to-digit invariant...

In mathematics, a Fermat number, named after Pierre de Fermat (1607–1665), the first known to have studied them, is a positive integer of the form: F n...

A composite number is a positive integer that can be formed by multiplying two smaller positive integers. Accordingly it is a positive integer that has...

In number theory, a perfect number is a positive integer that is equal to the sum of its positive proper divisors, that is, divisors excluding the number...

In number theory, an n-smooth (or n-friable) number is an integer whose prime factors are all less than or equal to n. For example, a 7-smooth number is...

for expressing numbers. "A base is a natural number B whose powers (B multiplied by itself some number of times) are specially designated within a numerical...

In mathematics, a double Mersenne number is a Mersenne number of the form M M p = 2 2 p − 1 − 1 {\displaystyle M_{M_{p}}=2^{2^{p}-1}-1} where p is prime...

In number theory, a congruent number is a positive integer that is the area of a right triangle with three rational number sides. A more general definition...

In number theory, a happy number is a number which eventually reaches 1 when the number and when applicable, the sum of the square of each of its digits...

also known as Number Three or by her superhero alter-ego The Rumor, is the third member of the Umbrella Academy. Described as narcissistic, she has the...

triangular number or triangle number counts objects arranged in an equilateral triangle. Triangular numbers are a type of figurate number, other examples...

dynamics Collatz conjecture Dudeney number Factorion Happy number Kaprekar number Meertens number Narcissistic number Perfect digit-to-digit invariant Perfect...

special teachers. In the second grade, he attempted to find a 70-digit narcissistic number in base 12—Eppes has described himself as "quixotic" in elementary...

In mathematics, a square number or perfect square is an integer that is the square of an integer; in other words, it is the product of some integer with...