In mathematics, a pandigital number is an integer that in a given base has among its significant digits each digit used in the base at least once. For...

each digit of the Arabic numerals) may represent: An example of a pandigital number A moment in Unix time celebrated in the year 2009 Numeral system,...

373, and 733. Also the number of edges in the join of two cycle graphs, both of order 37 1444 = 382, smallest pandigital number in Roman numerals 1445...

456,789 = smallest zeroless base 10 pandigital number 125,686,521 = 112112, palindromic square 126,390,032 = number of 34-bead necklaces (turning over...

Investigations. 694 = 2 × 347, centered triangular number, nontotient, smallest pandigital number in base 5. 695 = 5 × 139, 695!! + 2 is prime. 696 =...

789 : smallest pandigital number in decimal. 1,026,753,849 = 320432, the smallest pandigital square in base 10. 1,069,863,695 = number of square (0,1)-matrices...

prime 2,144,505 = number of trees with 21 unlabeled nodes 2,177,399 = smallest pandigital number in base 8. 2,178,309 = Fibonacci number 2,222,222 = repdigit...

square is a pandigital number containing each digit from 0 to 9 102,564 = The smallest parasitic number 103,049 = Schröder–Hipparchus number 103,680 = highly...

nonagonal number, centered octagonal number 8287 – super-prime 8321 – super-Poulet number 8326 – decagonal number 8345 - smallest pandigital number in base...

samples. Panalphabetic window Pangrammatic window Pangrammatic lipogram Pandigital number, the same idea for integers in a given base Heterogram - word, phrase...

In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci...

number in the same way, the result is 3816547290. This is a pandigital polydivisible number. De, Moloy, MATH'S BELIEVE IT OR NOT Parker, Matt (2014), "Can...

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...

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

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...

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...

polygonal number a number represented as a discrete r-dimensional regular geometric pattern of r-dimensional balls such as a polygonal number (for r =...

recreational mathematics, a vampire number (or true vampire number) is a composite natural number with an even number of digits, that can be factored into...

A cyclic number is an integer for which cyclic permutations of the digits are successive integer multiples of the number. The most widely known is the...

In number theory, a Carmichael number is a composite number ⁠ n {\displaystyle n} ⁠ which in modular arithmetic satisfies the congruence relation: b n...

A tetrahedral number, or triangular pyramidal number, is a figurate number that represents a pyramid with a triangular base and three sides, called a tetrahedron...

In number theory, a semiperfect number or pseudoperfect number is a natural number n that is equal to the sum of all or some of its proper divisors. A...

In number theory, a pentatope number is a number in the fifth cell of any row of Pascal's triangle starting with the 5-term row 1 4 6 4 1, either from...

A pronic number is a number that is the product of two consecutive integers, that is, a number of the form n ( n + 1 ) {\displaystyle n(n+1)} . The study...

329-gonal, 787-gonal and 3928-gonal number 11826 = smallest number whose square is pandigital without zeros 11953 = palindromic prime in bases 7 (465647)...

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...

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

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 replaced by the sum of the square of each digit. For instance, 13 is a happy...

A nonagonal number, or an enneagonal number, is a figurate number that extends the concept of triangular and square numbers to the nonagon (a nine-sided...