Properties of the Number 61939

Sixty-One Thousand Nine Hundred Thirty-Nine

Basics

Value: 61938 → 61939 → 61940

Parity: odd

Prime: No

Previous Prime: 61933

Next Prime: 61949

Digit Sum: 28

Digital Root: 1

Palindrome: No

Factorization: 23 × 2693

Divisors: 1, 23, 2693, 61939

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

2196 Try Today's Challenge

Representations

Binary: 1111000111110011

Octal: 170763

Duodecimal: 2BA17

Hexadecimal: f1f3

Square: 3836439721

Square Root: 248.87547086846465

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

a(n) is the least K such that K·6*M(n) - 1 and K·6*M(n) + 1 are twin primes, where M(n) = n-th Mersenne prime. A126612

Numbers n such that n divides the (right) concatenation of all numbers <= n written in base 10 (most significant digit on right). A61939