Huygens, Christiaan
,
Christiani Hugenii opera varia; Bd. 2: Opera geometrica. Opera astronomica. Varia de optica
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71 # 2016399 factus ex 3, 11, 29, 43 & 49(
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" # 2016400 factus ex 16(
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73 # 5116644 factus ex 4(
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)3, 169(
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" # 5116645 factus ex 7, 17, 19, 31, 73
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79 # 5997600 factus ex 17, 32(
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" # 5997601 factus ex 961(
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83 # 1164240 factus ex 5, 11, 49(
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" # 1164241 factus ex 169(
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89 # 2859480 factus ex 5, 47, 8(
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)2, 169(
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" # 2859481 factus ex 361(
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97 # 1138488 factus ex 3, 13, 41, 89, & 8(
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" # 1138489 factus ex 121(
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numerum primum cujus logorithmus quæritur, ſumantur im-
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mediatè duo numeri proximi, & </
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diatè ſequens, qui tres numeri cum illo primo ſunt quatuor
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numeri in ſuo naturali ordine ſe invicem ſequentes; </
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<
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multiplicetur primus numerus in cubum tertii & </
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cubum ſecundi, eritque factorum differentia æqualis ſummæ
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primi & </
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<
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">tertii, ut facile demonſtrari po-
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teſt; </
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<
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">iſtique numeri facti habent ad minimum ſex notas pri-
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mas omnino eaſdem, & </
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que omnium horum quatuor numerorum (excepto tertii) lo-
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gorithmi cognoſcuntur ex ipſa progrediendi methodo, & </
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ideo ad noſtram abbreviationem ſunt idonei. </
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<
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tra 1000 non opus eſt tanto apparatu, quoniam rectangulum
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numerorum, inter quos immediatè comprehenditur numerus
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primus cujus quæritur logorithmus, unitate ſolummodo defi-
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cit à quadrato numeri primi; </
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tæ ad minimum ſunt eædem; </
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<
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gorithmi, & </
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