:murakamisensya::_mo::_ya::murakamisensya: on Nostr: 2,3,5,11の倍数は簡単な見分け方があるけど7と13は無いから ...
2,3,5,11の倍数は簡単な見分け方があるけど7と13は無いから
2桁の中で一番合成数と分かりづらいのは91
Published at
2024-05-23 06:03:12Event JSON
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"content": "2,3,5,11の倍数は簡単な見分け方があるけど7と13は無いから\n2桁の中で一番合成数と分かりづらいのは91",
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