Properties of the Number 78643

Seventy-Eight Thousand Six Hundred Forty-Three

Basics

Value: 78642 → 78643 → 78644

Parity: odd

Prime: Yes

Previous Prime: 78623

Next Prime: 78649

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 78643

Divisors: 1, 78643

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011001100110011

Octal: 231463

Duodecimal: 39617

Hexadecimal: 13333

Square: 6184721449

Square Root: 280.43359285221163

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

Decimal equivalent of number defined by last k bits of the infinite binary string ...0011001100110011 (numbers with leading zeros omitted). A112627

Expansion of 1/(1+x-2·x³). A77973

Numerators of lower primes-only best approximates (POBAs) to sqrt(2); see Comments. A265772

a(n) = 3a(n-1) + 4a(n-2), a(0) = 1, a(1) = 5. A108981

Numerators of primes-only best approximates (POBAs) to sqrt(2); see Comments. A265776

a(1) = a(2) = 1, a(2n + 1) = 2·a(2n) and a(2n) = 2·a(2n - 1) + (-1)ⁿ. A16029

Expansion of 1/(1-x+2·x³). A77950

Sixth term of weak prime sextet: p(m-4)-p(m-5) < p(m-3)-p(m-4) < p(m-2)-p(m-3) < p(m-1)-p(m-2) < p(m)-p(m-1). A54833

Primes p such that the largest prime factor of p⁵ + 1 is less than p. A102327

Primes of the form 7n² - 9. A201854