GCF for 40 and 745

What is the Greatest Common Factor of 40 and 745?

Answer: GCF of 40 and 745 is 5

(Five)

Finding GCF for 40 and 745 using all factors (divisors) listing

The first method to find GCF for numbers 40 and 745 is to list all factors for both numbers and pick the highest common one:

All factors of 40: 1, 2, 4, 5, 8, 10, 20, 40

All factors of 745: 1, 5, 149, 745

So the Greatest Common Factor for 40 and 745 is 5

Finding GCF for 40 and 745 by Prime Factorization

The second method to find GCF for numbers 40 and 745 is to list all Prime Factors for both numbers and multiply the common ones:

All Prime Factors of 40: 2, 2, 2, 5

All Prime Factors of 745: 5, 149

As we can see there is only one Prime Factor common to both numbers. It is 5

So 5 is the Greatest Common Factor of 40 and 745

GCF Table

Number 1Number 2GCF
257455
267451
277451
287451
297451
307455
317451
327451
337451
347451
357455
367451
377451
387451
397451
407455
417451
427451
437451
447451
457455
467451
477451
487451
497451
507455
517451
527451
537451
547451

About "Greatest Common Factor" Calculator

This calculator will help you find the greatest common factor (GCF) of two numbers. For example, it can help you find out what is the Greatest Common Factor of 40 and 745? (The answer is: 5). Select the first number (e.g. '40') and the second number (e.g. '745'). After that hit the 'Calculate' button.
Greatest Common Factor (GCF) also known as the Greatest Common Divisor (GCD) or Highest Common Factor (HCF) - it is the largest positive integer that divides each of the integers with zero remainder

FAQ

What is the Greatest Common Factor of 40 and 745?

GCF of 40 and 745 is 5