Properties of the Number 30139

Thirty Thousand One Hundred Thirty-Nine

Basics

Value: 30138 → 30139 → 30140

Parity: odd

Prime: Yes

Previous Prime: 30137

Next Prime: 30161

Digit Sum: 16

Digital Root: 7

Palindrome: No

Factorization: 30139

Divisors: 1, 30139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 111010110111011

Octal: 72673

Duodecimal: 15537

Hexadecimal: 75bb

Square: 908359321

Square Root: 173.60587547660938

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 of the form abs(-66n³ + 3845n² - 60897n + 251831) in order of increasing nonnegative n. A272438

Smallest odd prime not occurring in the numerator of any of the 2ⁿ subset sums generated from the set 1/1, 1/2, 1/3, ..., 1/n. A75227

Emirps whose internal digits are also an emirp. A225235

Primes of the form m*(m+1)/2 + 4. A159048

Integers n such that p = 4n + 1, q = 4p + 3, r = 4q + 5, s = 4r + 7 and t = 4s + 9 are all prime. A243528

Greater of twin primes of (40n-23,40n-21). A244505

Numbers k such that 2^k-1 == 1 + b·k (mod k²), where b divides k - 2^p for some integer p >= 0 and 2^p <= b. A186884

a(n+1) = sum of digits of (a(n) + a(n-1)). A30139