Is 169 a prime number?

No, 169 is composite. It is divisible by 13.

Factors of 169

The factors of 169 are 1, 13 and 169. That is 3 factors in total.

A factor of 169 is a whole number that divides 169 exactly, with no remainder. 169 is a composite number because it has factors other than 1 and itself.

Factor pairs of 169

Two numbers that multiply to give 169:

1 × 169 = 169
13 × 13 = 169

Prime factorization of 169

169 = 13 × 13 = 13². The prime factors of 169 are 13.

Quick facts about 169

Is 169 prime? No.
Even or odd: odd.
Sum of its factors: 1 + 13 + 169 = 183.
169 is a perfect square (13 × 13), so it has an odd number of factors.

Factors of nearby numbers

Number	Factors
165	1, 3, 5, 11, 15, 33, 55, 165
166	1, 2, 83, 166
167	1, 167
168	16 factors
170	1, 2, 5, 10, 17, 34, 85, 170
171	1, 3, 9, 19, 57, 171
172	1, 2, 4, 43, 86, 172
173	1, 173

More about 169: square root of 169 · 169 in binary.

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