Properties of the Number 68951

Sixty-Eight Thousand Nine Hundred Fifty-One

Basics

Value: 68950 → 68951 → 68952

Parity: odd

Prime: No

Previous Prime: 68947

Next Prime: 68963

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 19 ² × 191

Divisors: 1, 19, 191, 361, 3629, 68951

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 10000110101010111

Octal: 206527

Duodecimal: 33A9B

Hexadecimal: 10d57

Square: 4754240401

Square Root: 262.58522426061984

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

Composite numbers whose prime factors contain no digits other than 1 and 9. A36309

Number of zero-sum -n..n arrays of 4 elements with adjacent element differences also in -n..n. A202254

Numbers k such that the period of the continued fraction for sqrt(k) contains exactly 49 ones. A31817

Smallest number·such that σ(x) = σ(x(n)), where x(n) is the n-th arithmetic derivatives of·and·is not equal to x(n). A246774

a(n) = sqrt(1 + P(n)*P(n+1)*P(n+2)*P(n+3)) where P(n) = A000129(n) are the Pell numbers. A383225

Triangle read by rows: T(n,k) is the number of unlabeled simple graphs with n vertices and treedepth k. A387046

The numbers n in s=n² + (n+1)² that satisfy the requirement for two consecutive squares c,d with c<d with d-c being the sum of two consecutive squares that c<s<d will give s-c and d-s both being squares. A192743

Scan the primes, record digit-sum if it is itself prime. A68951