Is 144 a prime number?

No, 144 is composite. It is divisible by 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48 and 72.

Factors of 144

Q: What is the prime factorization of 144?

144 = 2 × 2 × 2 × 2 × 3 × 3.

The factors of 144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72 and 144. That is 15 factors in total.

A factor of 144 is a whole number that divides 144 exactly, with no remainder. 144 is a composite number because it has factors other than 1 and itself.

Factor pairs of 144

Two numbers that multiply to give 144:

1 × 144 = 144
2 × 72 = 144
3 × 48 = 144
4 × 36 = 144
6 × 24 = 144
8 × 18 = 144
9 × 16 = 144
12 × 12 = 144

Prime factorization of 144

144 = 2 × 2 × 2 × 2 × 3 × 3 = 2⁴ × 3². The prime factors of 144 are 2 and 3.

Quick facts about 144

Is 144 prime? No.
Even or odd: even.
Sum of its factors: 1 + 2 + 3 + 4 + 6 + 8 + 9 + 12 + 16 + 18 + 24 + 36 + 48 + 72 + 144 = 403.
144 is a perfect square (12 × 12), so it has an odd number of factors.

Factors of nearby numbers

Number	Factors
140	1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140
141	1, 3, 47, 141
142	1, 2, 71, 142
143	1, 11, 13, 143
145	1, 5, 29, 145
146	1, 2, 73, 146
147	1, 3, 7, 21, 49, 147
148	1, 2, 4, 37, 74, 148

More about 144: 144 squared · square root of 144 · 144 in binary · 144 in Roman numerals.

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