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    Is 240 a prime number?

    Prime Number Checker
    Number

    Is 240 a prime or composite number?

    Answer

    Number 240 is not a Prime

    240 = 2⁴ × 3 × 5

    240 has 20 divisors, not two: a prime is divisible only by 1 and itself.

    Primes up to √240

    15² = 225 ≤ 240 < 256 = 16², so it is enough to try primes up to 15

    • ÷2 divides

    240 ÷ 2 = 120 — 2 divides 240, so 240 is composite

    Nearest primes: 239 and 241

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    Is 240 a prime number? Is 240 a prime number? 240 is a composite number. Check if any number is prime or composite with our free online prime checker.
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    Prime numbers list

    NumberIs Prime
    221No: 13 × 17
    222No: 2 × 3 × 37
    223Yes
    225No: 3² × 5²
    226No: 2 × 113
    227Yes
    229Yes
    231No: 3 × 7 × 11
    232No: 2³ × 29
    233Yes
    234No: 2 × 3² × 13
    235No: 5 × 47
    237No: 3 × 79
    238No: 2 × 7 × 17
    239Yes
    240No: 2⁴ × 3 × 5
    241Yes
    243No: 3⁵
    246No: 2 × 3 × 41
    247No: 13 × 19
    249No: 3 × 83
    250No: 2 × 5³
    251Yes
    252No: 2² × 3² × 7
    253No: 11 × 23
    255No: 3 × 5 × 17
    256No: 2⁸
    257Yes
    259No: 7 × 37
    261No: 3² × 29

    FAQ

    Is 240 a prime or composite number?

    Number 240 is not a Prime

    How many factors are in a number 240?

    20

    How to check if 240 is prime?

    Divide 240 by the primes in order: 15² = 225 ≤ 240 < 256 = 16², so it is enough to try primes up to 15. The first one that divides it is 2: 240 ÷ 2 = 120, so 240 is composite.

    See Also