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What is the greatest prime factor of 5^25 + 5^26 +

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What is the greatest prime factor of 5^25 + 5^26 + [#permalink] New post   12 Aug 2024, 23:36
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What is the greatest prime factor of \(5^{25} + 5^{26} + 5^{27}\)?

A. 3
B. 5
C. 11
D. 13
E. 31


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E
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Re: What is the greatest prime factor of 5^25 + 5^26 + [#permalink] New post   16 Aug 2024, 02:02
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5^25 + 5^26 + 5^27


5^25 ( 1 + 5 + 5^2 )

5^25 (31)


Answer E

Adewale Fasipe, quant instructor Lagos Nigeria.
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Re: What is the greatest prime factor of 5^25 + 5^26 + [#permalink] New post   16 Aug 2024, 07:40
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Re: What is the greatest prime factor of 5^25 + 5^26 + [#permalink]
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