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Is 144 a prime number?

Prime Number Checker

Is 144 a prime or composite number?

Answer

Number 144 is not a Prime

144 = 2⁴ × 3²

144 has 15 divisors, not two: a prime is divisible only by 1 and itself. It is a perfect square.

Primes up to √144

12² = 144 ≤ 144 < 169 = 13², so it is enough to try primes up to 12

÷2 divides

144 ÷ 2 = 72 — 2 divides 144, so 144 is composite

Nearest primes: 139 and 149

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See Also

Factors of a Number - List all Factors and Factor Pairs of a Number
Prime Factorization - Prime Factorization Calculator
Prime Numbers List - List of all Prime Numbers - how many Prime numbers are between

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Is 144 a prime number? Is 144 a prime number? 144 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

Number	Is Prime
129	No: 3 × 43
130	No: 2 × 5 × 13
131	Yes
132	No: 2² × 3 × 11
133	No: 7 × 19
134	No: 2 × 67
135	No: 3³ × 5
136	No: 2³ × 17
137	Yes
138	No: 2 × 3 × 23
139	Yes
140	No: 2² × 5 × 7
141	No: 3 × 47
142	No: 2 × 71
143	No: 11 × 13
144	No: 2⁴ × 3²
145	No: 5 × 29
146	No: 2 × 73
147	No: 3 × 7²
148	No: 2² × 37
149	Yes
150	No: 2 × 3 × 5²
151	Yes
152	No: 2³ × 19
153	No: 3² × 17
154	No: 2 × 7 × 11
156	No: 2² × 3 × 13
157	Yes
158	No: 2 × 79
159	No: 3 × 53

FAQ

Is 144 a prime or composite number?

Number 144 is not a Prime

How many factors are in a number 144?

15

How to check if 144 is prime?

Divide 144 by the primes in order: 12² = 144 ≤ 144 < 169 = 13², so it is enough to try primes up to 12. The first one that divides it is 2: 144 ÷ 2 = 72, so 144 is composite.