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22 (twenty-two) is a positive integer following 21 and preceding 23. It is an even composite number and a repdigit number.

In googology Edit

In Greek-based number-naming systems, 22 is associated with prefix "duicosa-", and with prefix "duoviginti-" in Latin systems.

Twenty-twos, a googologism with a similar name to this number, is equal to 20 copies of 2, or 10 copies of 22.

The numbers dumevalka, dutridumevalka, duquodumevalka are defined as 2[2,2], 2[3,2], 2[4,2] respectively, using SpongeTechX's copy notation.[1] They are all equal to 22, since 2[2,2] = 2[[2]] = 2[2] = 22, 2[3,2] = 2[[[2]]] = 2[[2]] = 22, 2[4,2] = 2[[[[2]]]] = 2[[[2]]] = 22.

Sources Edit

  1. STX Googology

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