Properties of the Number 1279

One Thousand Two Hundred Seventy-Nine

Basics

Value: 1278 → 1279 → 1280

Parity: odd

Prime: Yes

Previous Prime: 1277

Next Prime: 1283

Digit Sum: 19

Digital Root: 1

Palindrome: No

Factorization: 1279

Divisors: 1, 1279

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10011111111

Octal: 2377

Duodecimal: 8A7

Hexadecimal: 4ff

Square: 1635841

Square Root: 35.76310948449533

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

Mersenne exponents: primes p such that 2^p - 1 is prime. Then 2^p - 1 is called a Mersenne prime. A43

Greater of twin primes. A6512

Toothpick sequence (see Comments lines for definition). A139250

Primes p such that p + 4 is also prime. A23200

Primes p such that 2p-1 is also prime. A5382

Primes of form 10·k + 9. A30433

Primes of the form 2·k² + 29. A7641

Primes of the form x²+Ny², with N=102. A139643

Primes that become a different prime under the mapping 7 <=> 9. A180559

Primes congruent to 1 or 19 (mod 30). A33212