Properties of the Number 1979

One Thousand Nine Hundred Seventy-Nine

Basics

Value: 1978 → 1979 → 1980

Parity: odd

Prime: Yes

Previous Prime: 1973

Next Prime: 1987

Digit Sum: 26

Digital Root: 8

Palindrome: No

Factorization: 1979

Divisors: 1, 1979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 11110111011

Octal: 3673

Duodecimal: 118B

Hexadecimal: 7bb

Square: 3916441

Square Root: 44.48595283907045

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) = n + (n+1)². A28387

a(n) = a(n-1) + a(n-2) + a(n-3) with a(0)=2, a(1)=1, a(2)=2. A214899

Primes of the form 36·k² - 810·k + 2753, listed in order of increasing parameter k >= 0. A50268

Discriminants of imaginary quadratic fields with class number 23 (negated). A46020

Primes of the form k² - k - 1. A2327

Primes in the tribonacci-like sequence A214899. A230607

Lower prime of a difference of 8 between consecutive primes. A31926

Numbers k such that the smoothly undulating palindromic number (4·10^k-7)/33 = 121...21 is a prime (or PRP). A62209

First term of strong prime quartets: prime(m+1)-prime(m) > prime(m+2)-prime(m+1) > prime(m+3)-prime(m+2). A54804

a(n) = n² - n - 1. A165900