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I would like my token to have the maximum possible amount of tokens issued as a novelty. I would like to use 18 decimals standard ERC20 token, what value can I put in to get the maximum amount of tokens possible?

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The maximum number of tokens, compatible with ERC20, is the maximum amount a uint256 variable can store: (2**256) - 1 with 0 decimals. If you use 18 decimals, the maximum amount of tokens is (2^256-1)/10^18 = 115,792,089,237,316,195,423,570,985,008,687,907,853,269,984,‌​665,640,564,039,457

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  • It should be (2**256-1)/10**18 = 115,792,089,237,316,195,423,570,985,008,687,907,853,269,984,665,640,564,039,457
    – Ismael
    Aug 27, 2017 at 9:53
  • @Ismael is that the same as (2**(256) - 1) ? Aug 27, 2017 at 11:38
  • Thanks corrected it. I just wanted to make clear that he most likely isn't hitting the cap Aug 27, 2017 at 18:58
  • @danielmetlitski uint256 has 256 bits of storage so the maximum number being (2**256) - 1. If you have one decimal you can represent at most [(2**256) - 1] / 10 the last digit will be your decimal, repeating that reasoning you get formula in the answer.
    – Ismael
    Aug 27, 2017 at 19:04

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