Properties of the Number 81463

Eighty-One Thousand Four Hundred Sixty-Three

Basics

Value: 81462 → 81463 → 81464

Parity: odd

Prime: Yes

Previous Prime: 81457

Next Prime: 81509

Digit Sum: 22

Digital Root: 4

Palindrome: No

Factorization: 81463

Divisors: 1, 81463

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

8509 Try Today's Challenge

Representations

Binary: 10011111000110111

Octal: 237067

Duodecimal: 3B187

Hexadecimal: 13e37

Square: 6636220369

Square Root: 285.41723844224964

Classification

Fibonacci: No

Bell Number: No

Factorial Number: No

Regular Number: No

Perfect Number: No

Special

Kaprekar Constant: No

Munchausen Constant: No

Armstrong Number: No

Kaprekar Number: No

Catalan Number: No

Vampire Number: No

Taxicab Number: No

Super Prime: No

Friedman Number: No

Fermat Number: No

Cullen Number: No

OEIS Sequences

a(0)=2; for n>=1, a(n) = smallest prime p such that there is a gap of exactly 2n between p and next prime, or -1 if no such prime exists. A230

Records in A000230. A133429

a(n) is the smallest prime q such that, for the previous prime p and the following prime r, the fraction (q-p)/(r-q) has denominator n (or 0, if such a prime does not exist). A168253

Smallest prime p such that there is a gap of exactly 2·prime(n) between p and the next prime. A80082

Primes p such that (r-p)/log(p) > 4, where r is the next prime after p. A82889

Primes p such that q-p = 46, where q is the next prime after p. A134122

Increasing peaks in the prime gap sequence A000230. A86977

a(n) is the smallest prime q > a(n-1) such that, for the previous prime p and the following prime r, the fraction (q-p)/(r-q) has denominator prime(n) (or 0, if such a prime does not exist). A179328

Primes preceding the first-occurrence gaps in A014320. A335366

First member of the least set of 3 consecutive primes such that the sum of each pair of consecutive primes in this set is a multiple of n. A382698