Is 44 a prime number?
44 is not a prime number. Here is a way to check it.
The answer
No. 44 is not a prime number: 2 × 22 = 44.
How to see that 44 is not prime
44 is even, and every even number can be divided by 2, so 2 is a factor as well as 1 and 44.
44 has 6 factors (1, 2, 4, 11, 22 and 44), which make 3 factor pairs.
Split 44 into prime factors
Split off the smallest prime each time, and keep going until every part is prime:
- 44 = 2 × 22
- 44 = 2 × 2 × 11
With repeated primes written as powers, that is 2² × 11. A small raised number tells you how many times to use that factor: for example, 2³ means 2 × 2 × 2.
44 in the times tables
44 turns up in 2 different times tables, the 4 and 11: 4 × 11 and 11 × 4.
Quick checks that catch 44
- The last digit, 4, is even, so 2 goes in.
- Half of it is 22, which is still even, so 4 goes in.
- Its two digits match, and every two-digit number like that is in the 11 times table.
44 at a glance
Optional extra number facts:
- In words
- forty-four
- In Roman numerals
- XLIV
- Odd or even
- Even: it ends in 4
- Its factors add up to
- 84, or 40 without 44 itself. 44 is deficient: Deficient means this sum is less than the number.
The numbers either side of 44
- 43 is prime: 2, 3 and 5 do not go into it, and 7 × 7 is already past 43. Check 43 in full
- 45 is not prime. Its digits add up to 4 + 5 = 9, which is a multiple of 3. That means 45 is a multiple of 3 too, so 3 is a factor. Check 45 in full
Related pages
More numbers
Questions parents ask
Which prime numbers are either side of 44?
43 below it and 47 above it, a gap of 4.
What is 44 squared?
44 × 44 = 1936.
What is the smallest number with as many factors as 44?
12. It has 6 factors, the same as 44.
Continue your number practice
Explore the diagnostic for another set of practice questions.