A mnemonic to remember the first 15 digits of e.

Andrew Jackson was the 7th president of the United States of America.

.7

He served two consecutive terms in office.

2.7

He was elected in 1828.

2.71828

2.718281828

He lived to the ripe old age of 90.

2.718281828 90

And he carried a .45 on each hip.

2.718281828459045

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