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

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

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

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

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...

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

{\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...

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...

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

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

Arithmetic dynamics Dudeney number Factorion Happy number Kaprekar's constant Kaprekar number 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...

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...

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

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

Dudeney number Factorion Happy number Kaprekar's constant Kaprekar number Meertens number Narcissistic number Perfect digital invariant Sum-product number van...

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 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...

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...

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...

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

In mathematics, a harshad number (or Niven number) in a given number base is an integer that is divisible by the sum of its digits when written in that...

In number theory, a happy number is a number which eventually reaches 1 when the number is replaced by the sum of the square of each digit. For instance...

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...