Properties of the Number -1256

Two Hundred Fifty-Six

Basics

Value: -1257 → -1256 → -1255

Parity: even

Prime: No

Previous Prime:

Next Prime: 1

Digit Sum: 14

Digital Root: 5

Palindrome: No

Factorization: 2 ³ × 157

Divisors: 1, 2, 4, 8, 157, 314, 628, 1256

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: -10011101000

Octal: -2350

Duodecimal: -888

Hexadecimal: -4e8

Square: 1577536

Square Root: 35.4400902933387

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

G.f.: 1-q = ∑_k>=0 a(k)*q^k * Faq(k+1,q)², where Faq(n,q) is the q-factorial of n. A129273

a(n) = (a(n-1) * a(n-3) + (-1)ⁿ * a(n-2)²) / a(n-4), with a(0) = 0, a(1) = -1, a(2) = a(3) = a(4) = 1, a(9) = 3. A247369

First differences of number of active (ON, black) cells in n-th stage of growth of two-dimensional cellular automaton defined by "Rule 601", based on the 5-celled von Neumann neighborhood. A272825

a(n) = ((n²+1)³) - s, where s is the nearest square to (n²+1)³. A233149

Number of partitions of n into parts having a common factor. A18783

a(n) = ∑_d∣n p(d), where p(d) = A000041 = number of partitions of d. A47968

Number of partitions of partitions of n where all partitions have the same sum. A305551

Numbers k such that k⁸ + 1 is prime. A6314

Twice-partitioned numbers where the first partition is constant. A279787

Numbers m such that the Bernoulli number B_m has denominator 30. A51226