0
The number 1 is neither prime nor composite. The numbers 25, 16, 21, and 27 are divisible by factors that are not one or the number itself. 19 is the only one that has only 1 and itself as factors, so it is a Prime number.
What else can I help you with?
Related Questions
Which is a prime number 16 21 19 18?
19 is prime.
What is the prime number of 16 27 13 19 21?
They are 13 and 19 which are prime numbers
Is 23 21 19 prime or composite?
19 is a prime number. Its only factors are 1 and 19. 21 is a composite number. Its factors are 1, 3, 7, and 21. 23 is a prime number. Its only factors are 1 and 23.
Which of these numbers are prime 13 16 19 21?
13 and 19.
Which one is a prime number 19 21 or 23?
19 and 23 are prime.
Which are prime numbers out of 16 27 13 19 and 21?
They are 13 and 19
What are prime numbers 16 27 13 19 21?
13,19.
Which number is a prime number 7 16 21 28 93?
7 is prime.
What is the largest prime number less than 21?
19
Which is not a prime number 17 19 or 21?
21 isn't because 7*3=21.
Which number is prime 9 19 21 25?
3 x 3 = 9 (Not a prime ; Composite) 1 x 19 = 19 ( Prime) 3 x 7 = 21 (Note a prime: Composite) 5 x 5 = 25 (Not a prime ; Composite).
Is 10 19 21 62 composite numbers?
19 is prime number. 10, 21 and 62 are composite numbers.
Trending Questions
What is the density at STP of the gas sulfur hexafluoride?
Why would an electric heater creates black residue on walls and furniture?
How can you use the word doable in a sentence?
How many number 1s has the supremes had?
When was Bill Summers - musician - born?
What imaganary line separates one line from the next on earth?
How can I ensure proper care for my bougainvillea plant to help it thrive and flourish?
What are the functions of reading English text?
How much will it cost a uS citizen to get a tourist visa to Vietnam?
When was Andrew B. Murray Vocational School created?
What is the least common multiple of 6 and 17?
What are the symptoms of ankle bone hairline fracture?
What is a benefit of using DTP to produce a newspaper?
What is r in this equation 100 r equals 99.52?
What is the life cycle of the shigella bacteria?
Is there authors that write like Mary balogh?
What is the 3rd largest city in the U.S.?
What does the half life tell about a radiosotope?
Can wintergreen cause side effects?
How many schools are named after John Glenn?
Copyright ©2026 Infospace Holdings LLC, A System1 Company. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Answers.