Properties of the Number 1308

One Thousand Three Hundred Eight

Basics

Value: 1307 → 1308 → 1309

Parity: even

Prime: No

Previous Prime: 1307

Next Prime: 1319

Digit Sum: 12

Digital Root: 3

Palindrome: No

Factorization: 2 ² × 3 × 109

Divisors: 1, 2, 3, 4, 6, 12, 109, 218, 327, 436

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100011100

Octal: 2434

Duodecimal: 910

Hexadecimal: 51c

Square: 1710864

Square Root: 36.16628264005025

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

Self-convolution of Fibonacci numbers. A1629

Numbers k such that Bernoulli number B_k has denominator 2730. A249134

|First digit - second digit + third digit - fourth digit ...| = 10. A60978

Narayana-Zidek-Capell numbers: a(n) = 1 for n <= 2. Otherwise a(2n) = 2a(2n-1), a(2n+1) = 2a(2n) - a(n). A2083

Numbers n such that the decimal expansions of both n and n² have 0 as smallest digit and 8 as largest digit. A256708

a(n) = (-6·n⁷ + 154·n⁶ - 1533·n⁵ + 7525·n⁴ - 18879·n³ + 22561·n² - 7302·n + 2520)/2520. A161710

Number T(n,k) of equivalence classes of ways of placing k 3 X 3 tiles in an n X 5 rectangle under all symmetry operations of the rectangle; irregular triangle T(n,k), n>=3, 0<=k<=floor(n/3), read by rows. A231473

Cald's sequence: a(n+1) = a(n) - prime(n) if that value is positive and new, otherwise a(n) + prime(n) if new, otherwise 0; start with a(1)=1. A6509

Dispersion of A047204, (numbers >1 and congruent to 3 or 4 mod 5), by antidiagonals. A191731

Numbers k whose largest divisor <= sqrt(k) equals 12. A162532