Is 49 a Prime Number?
Is 49 prime?
No
49 = 7² (divisible by 7).
Why
49 is composite because it is divisible by 7 (49 = 7²), so it has factors other than 1 and itself.
A prime number is a whole number greater than 1 whose only factors are 1 and itself. To check 49, test whether any prime up to √49 divides it evenly — if none do, it is prime.
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The prime factorization calculator tests any number and shows its prime factors and all divisors.
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Frequently asked questions
Is 49 a prime number?+
No, 49 is composite because it is divisible by 7 (49 = 7²), so it has factors other than 1 and itself.
What is 49 divisible by?+
49 is divisible by more than just 1 and itself. Its prime factorization is 49 = 7².