Is 39 a prime number?

Prime Number Checker
Number

Is 39 a prime or composite number?

Answer

Number 39 is not a Prime

39 = 3 × 13

39 has 4 divisors — 1, 3, 13 and 39; a prime has exactly two: 1 and itself.

Primes up to √39

6² = 36 ≤ 39 < 49 = 7², so it is enough to try primes up to 6

  • ÷2 does not divide
  • ÷3 divides

39 ÷ 3 = 13 — 3 divides 39, so 39 is composite

Nearest primes: 37 and 41

Related Calculations

See Also

Prime numbers list

NumberIs Prime
24No: 2³ × 3
25No: 5²
26No: 2 × 13
27No: 3³
28No: 2² × 7
29Yes
30No: 2 × 3 × 5
31Yes
32No: 2⁵
33No: 3 × 11
34No: 2 × 17
35No: 5 × 7
36No: 2² × 3²
37Yes
38No: 2 × 19
39No: 3 × 13
40No: 2³ × 5
41Yes
42No: 2 × 3 × 7
43Yes
44No: 2² × 11
45No: 3² × 5
46No: 2 × 23
47Yes
48No: 2⁴ × 3
49No: 7²
50No: 2 × 5²
51No: 3 × 17
52No: 2² × 13
53Yes

FAQ

Is 39 a prime or composite number?

Number 39 is not a Prime

How many factors are in a number 39?

4

How to check if 39 is prime?

Divide 39 by the primes in order: 6² = 36 ≤ 39 < 49 = 7², so it is enough to try primes up to 6. The first one that divides it is 3: 39 ÷ 3 = 13, so 39 is composite.

See Also