Properties of the Number 148

One Hundred Forty-Eight

Basics

Value: 147 → 148 → 149

Parity: even

Prime: No

Previous Prime: 139

Next Prime: 149

Digit Sum: 13

Digital Root: 4

Palindrome: No

Factorization: 2 ² × 37

Divisors: 1, 2, 4, 37, 74, 148

Polygonal

Triangular: No

Square: No

Pentagonal: No

Hexagonal: No

Heptagonal: Yes

Tetrahedral: No

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Representations

Binary: 10010100

Octal: 224

Duodecimal: 104

Hexadecimal: 94

Square: 21904

Square Root: 12.165525060596439

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

Numbers that are not squarefree. Numbers that are divisible by a square greater than 1. The complement of A005117. A13929

a(n) = prime(n) - 1. A6093

Numbers that are the product of exactly three (not necessarily distinct) primes. A14612

a(n) = 3·n + 1. A16777

Positive integers which are neither squarefree integers nor prime powers. A126706

Triangle read by rows: T(n,k) is the number of compositions of n into nonzero parts with k parts directly followed by a different part, n>=0, 0<=k<=A004523(n-1). A238279

Fibbinary numbers: if n = F(i1) + F(i2) + ... + F(ik) is the Zeckendorf representation of n (i.e., write n in Fibonacci number system) then a(n) = 2^{i1 - 2} + 2^{i2 - 2} + ... + 2^{ik - 2}. Also numbers whose binary representation contains no two adjacent 1's. A3714

Heptagonal numbers (or 7-gonal numbers): n*(5·n-3)/2. A566

Numbers that are the sum of 2 squares. A1481

Numbers that are the sum of 2 nonzero squares. A404

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