Properties of the Number 1315

One Thousand Three Hundred Fifteen

Basics

Value: 1314 → 1315 → 1316

Parity: odd

Prime: No

Previous Prime: 1307

Next Prime: 1319

Digit Sum: 10

Digital Root: 1

Palindrome: No

Factorization: 5 × 263

Divisors: 1, 5, 263, 1315

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10100100011

Octal: 2443

Duodecimal: 917

Hexadecimal: 523

Square: 1729225

Square Root: 36.26292872893749

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

Describe n. Also called the "Say What You See" or "Look and Say" sequence LS(n). A45918

Numbers k such that 10^2·k+1-7·10^k-1 is prime. A115073

a(n) = 4·n² - 7·n + 4. A54567

Numbers m such that the Bernoulli number B_2·m has denominator 66. A51229

Numbers k such that both k and k + 1 are Niven numbers in base 2 (A049445). A330931

One of many square spiral sequences: a(n) = n² + n - floor((n-1)/2). A317186

Describe n (count digits in order of increasing value, ignoring missing digits). A47842

Numbers k such that k² has an odd number of digits and the middle digit is 9. A279429

Number A(n,k) of partitions of the (n+k)-multiset {0,...,0,1,2,...,k} with n 0's; square array A(n,k), n>=0, k>=0, read by antidiagonals. A346426

Number of integer partitions of n such that no distinct part can be written as a nonnegative linear combination of other distinct parts. A364915