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Suppose that there are two primes, P1 = 229 and p2 = 61. Find the value of z and Φ.

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Suppose that there are two primes, P1 = 229 and p2 = 61. Find the value of z and Φ.

(a) 13969, 13680

(b) 5853, 23452

(c) 7793, 34565

(d) 17146, 69262

This question was addressed to me in homework.

I'm obligated to ask this question of Cryptography topic in portion Number Theory and Cryptography of Discrete Mathematics

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Right option is (a) 13969, 13680

Easy explanation: We know that, z = p1*p2 = 229*61 = 13969 and Φ = (p1 – 1)(p2 – 1) = (229 – 1)(61 – 1) = 228*60 = 13680.

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