MathQuarryCalculators

Primes / Is 4 prime?

Is 4 a Prime Number?

No4 = 2^2

4 is NOT prime: 2 × 2 = 4. That makes 2 a genuine divisor of 4 beyond 1 and 4 itself. Fully broken down, 4 = 2^2, for 3 divisors total. 4 sits between primes 3 and 5, 1 below and 1 above. 4: 2 divide 4 evenly, checked against 2-12. 4 is even, digit sum 4 for 4, digital root 4 for 4. 4 has 6 primes within 10 of 4.

Factors
1, 2, 4
Number of factors
3
Prime?
No
Prime factorization
2^2
Even or odd
Even
Square
16
Cube
64
Binary
100
Hexadecimal
4
Roman numeral
IV
Perfect square?
Yes
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Full facts for 4 →Factors of 4 →