Question

show that there are infinitely
prime no of form 4n +3

Answer 1

hey here is youe answer
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let n = 1,2,3,4,5
then,
4n+3

1. 4×1+3=4+3=7
2. 4×2+3=8+3=11
3. 4×3+3=12+3=15
4. 4×4+3=16+3=19
5. 4×5+3=20+3=23

hence 7,11,15,19,23 all are prime
therefore , 4n+3 are infinitely prime
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