Properties of the Number 79979

Seventy-Nine Thousand Nine Hundred Seventy-Nine

Basics

Value: 79978 → 79979 → 79980

Parity: odd

Prime: Yes

Previous Prime: 79973

Next Prime: 79987

Digit Sum: 41

Digital Root: 5

Palindrome: No

Factorization: 79979

Divisors: 1, 79979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

Today's Target

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Representations

Binary: 10011100001101011

Octal: 234153

Duodecimal: 3A34B

Hexadecimal: 1386b

Square: 6396640441

Square Root: 282.8055869320831

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

Primes that contain digits 7 and 9 only. A20471

Primes that contain only the digits (0, 7, 9). A261181

Primes having only {7, 8, 9} as digits. A106110

Irregular table whose rows are the nontrivial cycles of the ghost iteration A329200, ordered by increasing smallest member, always listed first. A329196

Primes with digit sum = 41. A106774

Primes with minimal digit = 7. A106107

Primes p such that, if q,r,s are the next three primes, both p·q*r·s - (p+q+r+s) and p·q*r·s + (p+q+r+s) are primes. A390929

a(n) is smallest safe prime (A005385) such that a(n) + 12·n is the next safe prime, i.e., x = (a(n) - 1)/2 and x + 6·n are closest Sophie Germain primes. A59327

Starting positions of strings of four 3's in the decimal expansion of π. A83611

Primes p such that p²*q²*r² + 12 and p²*q²*r² - 12 are primes where q and r are next two primes after p. A240725