Is 441 a prime number?

Prime Number Checker
Number

Is 441 a prime or composite number?

Answer

Number 441 is not a Prime

441 = 3² × 7²

441 has 9 divisors, not two: a prime is divisible only by 1 and itself. It is a perfect square.

Primes up to √441

21² = 441 ≤ 441 < 484 = 22², so it is enough to try primes up to 21

  • ÷2 does not divide
  • ÷3 divides

441 ÷ 3 = 147 — 3 divides 441, so 441 is composite

Nearest primes: 439 and 443

Related Calculations

See Also

Prime numbers list

NumberIs Prime
420No: 2² × 3 × 5 × 7
421Yes
423No: 3² × 47
424No: 2³ × 53
425No: 5² × 17
428No: 2² × 107
429No: 3 × 11 × 13
431Yes
432No: 2⁴ × 3³
433Yes
434No: 2 × 7 × 31
436No: 2² × 109
437No: 19 × 23
438No: 2 × 3 × 73
439Yes
441No: 3² × 7²
443Yes
447No: 3 × 149
448No: 2⁶ × 7
449Yes
450No: 2 × 3² × 5²
451No: 11 × 41
453No: 3 × 151
455No: 5 × 7 × 13
457Yes
458No: 2 × 229
459No: 3³ × 17
461Yes
462No: 2 × 3 × 7 × 11
463Yes

FAQ

Is 441 a prime or composite number?

Number 441 is not a Prime

How many factors are in a number 441?

9

How to check if 441 is prime?

Divide 441 by the primes in order: 21² = 441 ≤ 441 < 484 = 22², so it is enough to try primes up to 21. The first one that divides it is 3: 441 ÷ 3 = 147, so 441 is composite.

See Also