Use Excel to find Modulo, GCD, and Modular Inverse

Use Microsoft Excel spreadsheet to determine an integer modulo another integer; find the greatest common divisor of two integers; and find the inverse of an integer modulo another integer.
We solved several examples manually in the previous videos on "Modular Arithmetic and Algorithms". Let us use Excel to check our work.

[randomsounds]

This saved my specialist encryption assignment thanks so much!

[jacekwikiera]

Thanks for the last formula, really helpful.
Formula: =MATCH(1, INDEX(MOD(ROW(INDIRECT("1:"&NUMBER))*NUMBER, MODULO), 0), 0)

[mathepunk]

This video helped me a lot. Thank you very much.

[robkim]

i wish you would add a web site  so that we know how you are doing it....it is hard to see what you are doing on video.

[dominiqueboure]

Doesn't work with values over 2^20...