Properties of the Number 61949

Sixty-One Thousand Nine Hundred Forty-Nine

Basics

Value: 61948 → 61949 → 61950

Parity: odd

Prime: Yes

Previous Prime: 61933

Next Prime: 61961

Digit Sum: 29

Digital Root: 2

Palindrome: No

Factorization: 61949

Divisors: 1, 61949

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111000111111101

Octal: 170775

Duodecimal: 2BA25

Hexadecimal: f1fd

Square: 3837678601

Square Root: 248.8955604264568

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

Numbers k such that (13^k - 5^k)/8 is prime. A128349

Primes of the form ∑_j=1..n (-1)^j *prime(j)*prime(j+1). A197422

Primes of the form 8n² - 3. A201856

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, -1), (-1, -1, 1), (-1, 0, 0), (1, -1, -1), (1, 1, 0)}. A148540

Number of walks within N³ (the first octant of Z³) starting at (0,0,0) and consisting of n steps taken from {(-1, -1, 0), (-1, 0, 1), (1, -1, -1), (1, 1, 0), (1, 1, 1)}. A150916

Numbers k such that k divides the (right) concatenation of all numbers <= k written in base 20 (most significant digit on right). A61949