Properties of the Number 61979

Sixty-One Thousand Nine Hundred Seventy-Nine

Basics

Value: 61978 → 61979 → 61980

Parity: odd

Prime: Yes

Previous Prime: 61967

Next Prime: 61981

Digit Sum: 32

Digital Root: 5

Palindrome: No

Factorization: 61979

Divisors: 1, 61979

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 1111001000011011

Octal: 171033

Duodecimal: 2BA4B

Hexadecimal: f21b

Square: 3841396441

Square Root: 248.95581937363906

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

Expansion of ∏_k>=1 1/(1+x^k)^k² in powers of x. A284896

Smallest lesser of twin primes (A001359) with index n, or a(n)=0, if there are no such twin primes. A242807

Prime p such that p and p+2 are twin primes and p²+p-1 p²+p+1 are also twin primes. A228968

Lower twin primes with lower twin prime index. A88460

Numbers that are the smallest of four consecutive primes, no three of which sum to a nonprime. A298763

Primes with nine embedded primes. A179917

Integers n such that n+2!, n+2!+3!, n+2!+3!+4!, n+2!+3!+4!+5!, n+2!+3!+4!+5!+6!, and n+2!+3!+4!+5!+6!+7! are all prime. A267123

Prime(prime(n)) when prime(prime(n)) and n are twin primes. A87394

Number of (n+2)X(7+2) 0..1 arrays with every 3X3 subblock sum of the two medians of the central row and column plus the two sums of the diagonal and antidiagonal nondecreasing horizontally, vertically and ne-to-sw antidiagonally. A259005

Floor of arithmetic-geometric mean of n and prime(n). A61979