Is 144 a prime number?

Prime Number Checker
Number

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

Related Calculations

See Also

Prime numbers list

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

See Also