Try to insert a number 2100000037200351 into any cel. The number is
converted to 2100000037200350.
Others numbers too. Ex: 2100000037200395 is converted to
2100000037200390.
Sorry for my poor english
[pt-br]
Tente inserir o numero 2100000037200351 em qualquer celula. O número é
convertido para 2100000037200350
Em outros numeros tambem ocorrem a mesma coisa. Ex: 2100000037200395 é
convertido para 2100000037200390
Neimar L. Avila
neimar.avila@gmail.com
Not a bug.
Excel limits precision to 15 digits. Everything after the 15th digit is
converted to a 0.
You have to enter numbers that long as TEXT. Either pre-format the cell as
TEXT or precede the entry with an apostrophe: '2100000037200351. You will
not be able to do math operations on these.

Signature
Biff
Microsoft Excel MVP
Try to insert a number 2100000037200351 into any cel. The number is
converted to 2100000037200350.
Others numbers too. Ex: 2100000037200395 is converted to
2100000037200390.
Sorry for my poor english
[pt-br]
Tente inserir o numero 2100000037200351 em qualquer celula. O número é
convertido para 2100000037200350
Em outros numeros tambem ocorrem a mesma coisa. Ex: 2100000037200395 é
convertido para 2100000037200390
Neimar L. Avila
neimar.avila@gmail.com