Properties of the Number 61279

Sixty-One Thousand Two Hundred Seventy-Nine

Basics

Value: 61278 → 61279 → 61280

Parity: odd

Prime: No

Previous Prime: 61261

Next Prime: 61283

Digit Sum: 25

Digital Root: 7

Palindrome: No

Factorization: 233 × 263

Divisors: 1, 233, 263, 61279

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1110111101011111

Octal: 167537

Duodecimal: 2B567

Hexadecimal: ef5f

Square: 3755115841

Square Root: 247.5459553295105

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

Sequence of pairwise relatively prime numbers of class P₈ (see comment in A275246). A275253

Expansion of 1/(x^k*(1-x-3·x^k+1)) for k=9. A143460

Number of (n+1)X(n+1) -5..5 symmetric matrices with every 2X2 subblock having sum zero and one, three or four distinct values. A211335

Numbers k such that σ(k) - k - 1 is a perfect number. A293992

a(n) = ∑_{k >= 0} 2^k * binomial(k+2,n-2·k). A61279

Numbers k such that k + 6^t is semiprime for t = 0 to 9. A330508