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When 22562^{256} is divided by 1717 the remainder would be

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Q. When 22562^{256} is divided by 1717 the remainder would be
  1. Modular Exponentiation Concept: We will use the concept of modular exponentiation to find the remainder when 22562^{256} is divided by 1717. This concept states that if we want to calculate abmodma^b \mod m, we can break this down into smaller powers of aa and repeatedly apply the modulus to keep the numbers small.
  2. Finding Remainder for 22562^{256}: First, we find the remainder when 22 is raised to a power and divided by 1717. We start with small powers of 22.\newline21mod17=22^1 \mod 17 = 2\newline22mod17=42^2 \mod 17 = 4\newline24mod172^4 \mod 17 can be found by squaring the result of 22mod172^2 \mod 17.\newline(22mod17)2=42=16mod17=16(2^2 \mod 17)^2 = 4^2 = 16 \mod 17 = 16
  3. Calculating Small Powers of 22: We continue by finding 28mod172^8 \mod 17, which is the square of 24mod172^4 \mod 17.
    (24mod17)2=162mod17(2^4 \mod 17)^2 = 16^2 \mod 17
    To calculate this, we can first find 162=25616^2 = 256 and then take this modulo 1717.
    256mod17=0256 \mod 17 = 0 (since 256256 is a multiple of 1717)
  4. Finding 28mod172^8 \mod 17: Knowing that 28mod17=02^8 \mod 17 = 0, we can find 216mod172^{16} \mod 17 by squaring the result of 28mod172^8 \mod 17.
    (28mod17)2=02=0mod17(2^8 \mod 17)^2 = 0^2 = 0 \mod 17
  5. Finding 216mod172^{16} \mod 17: Now, we can express 22562^{256} as (216)16(2^{16})^{16}. Since we know that 216mod17=02^{16} \mod 17 = 0, raising this to any power will still result in 0mod170 \mod 17.\newline(216mod17)16=016=0mod17(2^{16} \mod 17)^{16} = 0^{16} = 0 \mod 17
  6. Correcting Previous Error: However, we made a mistake in the previous steps. 28mod172^8 \mod 17 is not 00, and therefore, 216mod172^{16} \mod 17 is not 00 either. We need to correct this error and re-calculate the correct remainders.

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