Properties of the Number 68261

Sixty-Eight Thousand Two Hundred Sixty-One

Basics

Value: 68260 → 68261 → 68262

Parity: odd

Prime: Yes

Previous Prime: 68239

Next Prime: 68279

Digit Sum: 23

Digital Root: 5

Palindrome: No

Factorization: 68261

Divisors: 1, 68261

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000101010100101

Octal: 205245

Duodecimal: 33605

Hexadecimal: 10aa5

Square: 4659564121

Square Root: 261.2680615766114

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

Seventh term of weak prime septet: p(m-5)-p(m-6) < 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). A54840

a(1) = 0, a(2) = 4, a(n) = a(n-1) + a(n-2) - 1. A187890

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

a(1) = 1, a(n) = prime equal to n-th partial sum of A073852. A73854

Array read by downward antidiagonals: A(n,k) = ∑_j=0..k+1 binomial(k+2, j+1)*A(n-1,j) with A(0,k) = 1, n >= 0, k >= 0. A370381

1/11 the number of colorings of an n X n square array with 11 colors. A68261