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Other Assets
 6 Months Ended
Jul. 31, 2021
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]  
Other Assets Other Assets
Other assets consisted of the following (in thousands):
July 31, 2021January 31, 2021
Non-marketable equity and other investments (1)
$151,929 $85,868 
Prepayments for goods and services29,304 19,824 
Technology patents and other intangible assets, net16,260 17,766 
Net deferred tax assets9,539 9,985 
Deposits6,213 6,218 
Derivative assets5,389 173 
Equity investments accounted for under the equity method— 48,222 
Other1,002 1,701 
Total$219,636 $189,757 
(1)Included in non-marketable equity and other investments are investments in loan receivables of privately held companies, which are carried at amortized cost. The carrying values of these loan receivables were $27 million and $13 million as of July 31, 2021, and January 31, 2021, respectively. The allowance for credit losses on loan receivables was immaterial for the periods presented.
Technology patents and other intangible assets with estimable useful lives are amortized on a straight-line basis. As of July 31, 2021, the future estimated amortization expense was as follows (in thousands):
Fiscal Period:
Remainder of 2022$1,454 
20232,688 
20242,380 
20251,900 
20261,636 
Thereafter6,202 
Total$16,260