Flashcards › Math › Arithmetic facts
Primes up to 100
Is it prime? The numbers 2 to 60 with a yes or no and why.
0 of 59 known
59 cards
- Is 2 prime?QuestionYes
- Is 3 prime?QuestionYes
- Is 4 prime?QuestionNo: 4 = 2 × 2
- Is 5 prime?QuestionYes
- Is 6 prime?QuestionNo: 6 = 2 × 3
- Is 7 prime?QuestionYes
- Is 8 prime?QuestionNo: 8 = 2 × 4
- Is 9 prime?QuestionNo: 9 = 3 × 3
- Is 10 prime?QuestionNo: 10 = 2 × 5
- Is 11 prime?QuestionYes
- Is 12 prime?QuestionNo: 12 = 2 × 6
- Is 13 prime?QuestionYes
- Is 14 prime?QuestionNo: 14 = 2 × 7
- Is 15 prime?QuestionNo: 15 = 3 × 5
- Is 16 prime?QuestionNo: 16 = 2 × 8
- Is 17 prime?QuestionYes
- Is 18 prime?QuestionNo: 18 = 2 × 9
- Is 19 prime?QuestionYes
- Is 20 prime?QuestionNo: 20 = 2 × 10
- Is 21 prime?QuestionNo: 21 = 3 × 7
- Is 22 prime?QuestionNo: 22 = 2 × 11
- Is 23 prime?QuestionYes
- Is 24 prime?QuestionNo: 24 = 2 × 12
- Is 25 prime?QuestionNo: 25 = 5 × 5
- Is 26 prime?QuestionNo: 26 = 2 × 13
- Is 27 prime?QuestionNo: 27 = 3 × 9
- Is 28 prime?QuestionNo: 28 = 2 × 14
- Is 29 prime?QuestionYes
- Is 30 prime?QuestionNo: 30 = 2 × 15
- Is 31 prime?QuestionYes
- Is 32 prime?QuestionNo: 32 = 2 × 16
- Is 33 prime?QuestionNo: 33 = 3 × 11
- Is 34 prime?QuestionNo: 34 = 2 × 17
- Is 35 prime?QuestionNo: 35 = 5 × 7
- Is 36 prime?QuestionNo: 36 = 2 × 18
- Is 37 prime?QuestionYes
- Is 38 prime?QuestionNo: 38 = 2 × 19
- Is 39 prime?QuestionNo: 39 = 3 × 13
- Is 40 prime?QuestionNo: 40 = 2 × 20
- Is 41 prime?QuestionYes
- Is 42 prime?QuestionNo: 42 = 2 × 21
- Is 43 prime?QuestionYes
- Is 44 prime?QuestionNo: 44 = 2 × 22
- Is 45 prime?QuestionNo: 45 = 3 × 15
- Is 46 prime?QuestionNo: 46 = 2 × 23
- Is 47 prime?QuestionYes
- Is 48 prime?QuestionNo: 48 = 2 × 24
- Is 49 prime?QuestionNo: 49 = 7 × 7
- Is 50 prime?QuestionNo: 50 = 2 × 25
- Is 51 prime?QuestionNo: 51 = 3 × 17
- Is 52 prime?QuestionNo: 52 = 2 × 26
- Is 53 prime?QuestionYes
- Is 54 prime?QuestionNo: 54 = 2 × 27
- Is 55 prime?QuestionNo: 55 = 5 × 11
- Is 56 prime?QuestionNo: 56 = 2 × 28
- Is 57 prime?QuestionNo: 57 = 3 × 19
- Is 58 prime?QuestionNo: 58 = 2 × 29
- Is 59 prime?QuestionYes
- Is 60 prime?QuestionNo: 60 = 2 × 30
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