Is 1729 a prime number?

No, 1,729 is not a prime number. It is a composite number: 1,729 = 7 × 247.

Why 1,729 is not prime

1,729 has divisors other than 1 and itself. The smallest is 7: 1,729 ÷ 7 = 247.

Prime factorization: 1,729 = 7 × 13 × 19.

Quick facts about 1,729

Even or odd: odd.
Nearest primes: 1723 below and 1733 above.
Primes up to 1,729: 269.

Is it prime? Nearby numbers

Number	Prime?
1,357	No, 23 × 59
1,459	Yes
1,501	No, 19 × 79
1,601	Yes
1,801	Yes
1,901	Yes
1,999	Yes
2,001	No, 3 × 23 × 29

Another number? Use the prime number checker for any value, or see the list of prime numbers.