Properties of the Number 30491

Thirty Thousand Four Hundred Ninety-One

Basics

Value: 30490 → 30491 → 30492

Parity: odd

Prime: Yes

Previous Prime: 30469

Next Prime: 30493

Digit Sum: 17

Digital Root: 8

Palindrome: No

Factorization: 30491

Divisors: 1, 30491

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011100011011

Octal: 73433

Duodecimal: 1578B

Hexadecimal: 771b

Square: 929701081

Square Root: 174.61672313956646

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

Triangle T(n,k) read by rows: T(n,k) is the number of compositions of n with k parts p at position p (fixed points), n>=0, 0<=k<=A003056(n). A238350

Number of compositions of n having exactly one fixed point. A240736

Lesser of twin primes p1 such that p1+(p2²-p1²) and p2+(p2²-p1²) are prime numbers. A174922

a(n) = 28·n² - 1. A158554

Larger of emirp pairs whose digital sums are also emirps (A178091). A178093

Primes p with same last two digits as k, where prime(k) = p. A232102

Primes p such that 11 is the largest of all prime factors of the numbers between p and the next prime (cf. A052248). A80187

Fourth prime p such that (p+n)²+n is prime but (p+j)²+j is not prime for all 0<j<n. A238676

Lexicographically earliest strictly increasing sequence of primes whose partial products lie between noncomposite numbers. A359939

Record-setting differences between adjacent elements of the Mian-Chowla sequence variant A058335. A80931