Properties of the Number 30661

Thirty Thousand Six Hundred Sixty-One

Basics

Value: 30660 → 30661 → 30662

Parity: odd

Prime: Yes

Previous Prime: 30649

Next Prime: 30671

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 30661

Divisors: 1, 30661

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111011111000101

Octal: 73705

Duodecimal: 158B1

Hexadecimal: 77c5

Square: 940096921

Square Root: 175.10282693320517

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

Prime number spiral (clockwise, Northeast spoke). A54553

Primes of the form 2·n² + 54·n + 25. A217497

Numbers k such that k, k+1, k+2 and k+3 are 1,2,3,4-almost primes. A113000

Numbers k such that A048138(k) is a prime and sets a new record for such primes. A64440

Primes p of the form 420k + 1 for some k. A217587

Numbers m such that numbers m, m + 1, m + 2 and m + 3 have k, 2k, 3k and 4k divisors respectively. A340157

Largest prime < 10·a(n-1), a(1)=31. A124335

Primes formed from concatenation of PrimePi(n) and prime(n). A236551

Primes p such that p, p + 1, p + 2 and p + 3 have 2, 4, 6 and 8 divisors respectively. A340871

Primes p such that ∑_k=primes<p (k mod p) and ∑_k=primes<p (p mod k) are both prime. A274025