Primes Under 200 — Set 1
| 4 | 7 | 3 | 4 | 2 | 2 | 4 | 3 | 3 | 7 | 5 | 9 |
| 8 | 2 | 6 | 2 | 7 | 5 | 8 | 1 | 3 | 4 | 6 | 4 |
| 7 | 0 | 5 | 9 | 8 | 5 | 5 | 8 | 1 | 5 | 5 | 0 |
| 6 | 1 | 0 | 9 | 9 | 8 | 2 | 5 | 7 | 7 | 8 | 9 |
| 2 | 4 | 1 | 9 | 0 | 5 | 1 | 1 | 5 | 8 | 6 | 7 |
| 4 | 7 | 4 | 0 | 6 | 1 | 2 | 8 | 0 | 8 | 3 | 2 |
| 2 | 6 | 9 | 1 | 4 | 7 | 1 | 5 | 1 | 6 | 7 | 4 |
| 0 | 6 | 6 | 9 | 4 | 0 | 5 | 2 | 7 | 3 | 2 | 9 |
| 9 | 8 | 3 | 2 | 0 | 5 | 5 | 2 | 2 | 9 | 9 | 4 |
| 4 | 1 | 8 | 5 | 7 | 8 | 4 | 3 | 0 | 5 | 8 | 1 |
| 3 | 3 | 8 | 9 | 7 | 4 | 1 | 4 | 1 | 4 | 7 | 5 |
| 6 | 8 | 5 | 3 | 5 | 1 | 1 | 2 | 6 | 5 | 4 | 4 |
Numbers to Find
- 5273
- 1851
- 75
- 851
- 5895
- 1265
- 016
- 574
Show answer key
- : 6,7 (right)
- : 7,1 (down)
- : 8,3 (down)
- : 5,3 (down)
- : 5,2 (left)
- : 6,11 (right)
- : 2,3 (left)
- : 9,9 (diagonal-down-right)
Activity Notes
Challenge yourself with prime numbers under 200 number search puzzles. An advanced challenge for experienced prime number solvers.
Prime Numbers Under 200
This expert-level puzzle includes all 45 prime numbers under 200. The expanded scope requires stronger recognition skills but provides the comprehensive prime number reference set used in many mathematical contexts. These puzzles challenge even experienced puzzle solvers.
Primes under 200 represent an important threshold in mathematical practice. Familiarity with this complete set develops the deep prime number sense needed for advanced number theory and mathematical reasoning.
Tips for Finding Primes Under 200
- Build systematically: Learn primes under 50 first, then under 100, then under 200 for progressive mastery.
- Three-digit primes can be tricky: Numbers like 127, 139, 149, 157, 167, 179, 181, 191, 193, 197, 199 require careful checking.
- Look for patterns in groupings: Some prime pairs cluster together (like 101, 103, 107, 109), helping you spot them.
What is a primes under 200 number search?
A primes under 200 number search is an advanced puzzle featuring all 46 prime numbers below 200. The larger grid and longer target list demand sustained concentration and strong prime recognition.
How many primes are there between 100 and 200?
There are 21 prime numbers between 100 and 200, including 101, 103, 107, 109, 113, 127, 131, 137, 139, 149, 151, 157, 163, 167, 173, 179, 181, 191, 193, 197, and 199.
Is the primes under 200 puzzle suitable for middle school?
Yes. Students in grades 6-8 studying factors, prime factorization, and the Sieve of Eratosthenes will find this puzzle both challenging and directly relevant to their curriculum.