Properties of the Number 139

One Hundred Thirty-Nine

Basics

Value: 138 → 139 → 140

Parity: odd

Prime: Yes

Previous Prime: 137

Next Prime: 149

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 139

Divisors: 1, 139

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: No

Tetrahedral: No

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Representations

Binary: 10001011

Octal: 213

Duodecimal: B7

Hexadecimal: 8b

Square: 19321

Square Root: 11.789826122551595

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

The prime numbers. A40

Coordination sequence for planar net 3.3.3.3.6 (also called the fsz net). A250120

Powers of primes. Alternatively, 1 and the prime powers (p^k, p prime, k >= 1). A961

Prime numbers at the beginning of the 20th century (today 1 is no longer regarded as a prime). A8578

Greater of twin primes. A6512

a(n) = ∑_k=0..n p(k) where p(k) = number of partitions of k (A000041). A70

Primes of the form 4·k + 3. A2145

Prime powers: numbers of the form p^k where p is a prime and k >= 1. A246655

Odd primes. A65091

a(n) = 3·n + 1. A16777

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