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Meaning of Lychrel number | Babel Free

Noun CEFR B2

Definitions

A natural number that cannot form a palindrome through the iterative process of repeatedly reversing its digits and adding the resulting numbers.

Examples

“In base ten (decimal), no Lychrel numbers have been yet proved to exist, but many are suspected.”

CEFR level

B2
Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.
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See also

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