Q: Is 13,720 a Prime Number?
A: No, 13,720 is not a prime number.
A prime number is a natural number, greater than one, that can only be divided by 1 and itself.
The number 13720 can be evenly divided by 1 2 4 5 7 8 10 14 20 28 35 40 49 56 70 98 140 196 245 280 343 392 490 686 980 1,372 1,715 1,960 2,744 3,430 6,860 and 13,720, with no remainder.
Since 13,720 cannot be divided by just 1 and 13,720, it is not a prime number.