Is 445 a prime number?

No, 445 is not a prime number. It is a composite number: it ends in 5, so it is divisible by 5.

Why 445 is not prime

445 has divisors other than 1 and itself. The smallest is 5: 445 ÷ 5 = 89.

Prime factorization: 445 = 5 × 89.

Quick facts about 445

Even or odd: odd.
Nearest primes: 443 below and 449 above.
Primes up to 445: 86.

Is it prime? Nearby numbers

Number	Prime?
441	No, 3 × 3 × 7 × 7
442	No, 2 × 13 × 17
443	Yes
444	No, 2 × 2 × 3 × 37
446	No, 2 × 223
447	No, 3 × 149
448	No, 2 × 2 × 2 × 2 × 2 × 2 × 7
449	Yes

Another number? Use the prime number checker for any value, or see the list of prime numbers.