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Who knows one hundred seventy-two?

Please cite/link your sources, if possible. At some point at least twenty-four hours from now, I will:

  • Upvote all interesting answers.

  • Accept the best answer.

  • Go on to the next number.

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up vote 2 down vote accepted

Avaraham recognized his Creator for 172 years.

[Nedarim 32a learns that Avraham recognized Hashem at 3 years old from the pasuk עֵקֶב אֲשֶׁר-שָׁמַע אַבְרָהָם בְּקֹלִי - *Since Avraham listened to My voice. The gematria of Ekev= 172. So: For 172 years Avaraham listened to My voice. Avraham died at 175. 175-172=3]

*The exact meaning of עֵקֶב is debated

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..." "Since" is in Hebrew "aikev" = ayin (70) + kuf (100) + vais (2) = 172 -- implying that Abraham hearkened to G-d for 172 years. – Gershon Gold Jan 21 '11 at 14:34
Thanks for clarifying. I'll edit to make that clearer. – YDK Jan 21 '11 at 19:32

In this weeks parashas Yisro, there are 172 words in the Aseres haDibros. (Count 'em.)

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172 years after the USA declared its independence, the State of Israel was established.

1948 - 1776 = 172

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On a year with only 1 Adar and Chesvon 29 days / Kislev 30 days we say Mashiv HaRuach for 172 days

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