Is 49 a prime number?

Prime Number Checker
Number

Is 49 a prime or composite number?

Answer

Number 49 is not a Prime

49 = 7²

49 has 3 divisors — 1, 7 and 49; a prime has exactly two: 1 and itself. It is a perfect square.

Primes up to √49

7² = 49 ≤ 49 < 64 = 8², so it is enough to try primes up to 7

  • ÷2 does not divide
  • ÷3 does not divide
  • ÷5 does not divide
  • ÷7 divides

49 ÷ 7 = 7 — 7 divides 49, so 49 is composite

Nearest primes: 47 and 53

Related Calculations

See Also

Prime numbers list

NumberIs Prime
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
54No: 2 × 3³
55No: 5 × 11
56No: 2³ × 7
57No: 3 × 19
58No: 2 × 29
59Yes
60No: 2² × 3 × 5
61Yes
62No: 2 × 31
63No: 3² × 7

FAQ

Is 49 a prime or composite number?

Number 49 is not a Prime

How many factors are in a number 49?

3

How to check if 49 is prime?

Divide 49 by the primes in order: 7² = 49 ≤ 49 < 64 = 8², so it is enough to try primes up to 7. The first one that divides it is 7: 49 ÷ 7 = 7, so 49 is composite.

See Also