# PrimeNumber funding: rounds and investors

> PrimeNumber has raised $13M across 1 round since 2024. Investors include Salesforce Ventures, SMBC Venture Capital and Mizuho Capital.

Source: https://millionrounds.com/company/primenumber (Millionrounds; every figure on the page links to its filing or article)

Japan · [Venture startup](https://millionrounds.com/companies)

# Who invested in *PrimeNumber*

One round we have observed, with the 4 investors named in it. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it.

Professional Services

Funding summary Updated 26 Oct 2026

**$13M** raised across 1 round since 2024, from 1 source

- **Latest round:** Venture, $13M Apr 2024
- **Investors:** 4

See who backed them

## The rounds

- **Apr 2024** Venture **$13M** [Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) [SMBC Venture Capital](https://millionrounds.com/fund/smbc-venture-capital-2) [Mizuho Capital](https://millionrounds.com/fund/mizuho-capital) [Coral Capital](https://millionrounds.com/fund/coral-capital) Source recorded

## Everyone who backed them

[Salesforce Ventures](https://millionrounds.com/fund/salesforce-ventures) Corporate VC **1** round

[SMBC Venture Capital](https://millionrounds.com/fund/smbc-venture-capital-2) Investment bank **1** round

[Mizuho Capital](https://millionrounds.com/fund/mizuho-capital) VC firm **1** round

[Coral Capital](https://millionrounds.com/fund/coral-capital) VC firm **1** round

Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=primenumber).

## Also claim to have backed them

This firm lists PrimeNumber as a portfolio company on their own website, but no report of a round names it. They are the firms' own claims, kept apart from the rounds above.

[Daiwa Corporate Investment](https://millionrounds.com/fund/daiwa-corporate-investment) Corporate VC Per its own site

## Quick answers about PrimeNumber

### Who invested in PrimeNumber?

PrimeNumber's investors include Salesforce Ventures, SMBC Venture Capital, Mizuho Capital and Coral Capital.

### How much has PrimeNumber raised?

PrimeNumber has raised $13M across 1 round since 2024.

### When did PrimeNumber last raise?

PrimeNumber's most recent round was a Venture of $13M in Apr 2024.

### What was PrimeNumber's biggest round?

Its most recent round, $13M in Apr 2024, is also its largest on record.

### Who backed PrimeNumber first?

PrimeNumber's first round on record, in Apr 2024, was backed by Salesforce Ventures, SMBC Venture Capital and Mizuho Capital and 1 others.

### What stage is PrimeNumber at?

PrimeNumber's latest named round is a Venture, in Apr 2024.

### Where is PrimeNumber based?

PrimeNumber is based in Japan.

## Companies like PrimeNumber

In the same sector, and raised in the last eighteen months.

[**CFOne** $1.1M · Jun 2026](https://millionrounds.com/company/cfone)[**Imiron** $878K · Jun 2026](https://millionrounds.com/company/imiron)[**Pacific Meta** May 2026](https://millionrounds.com/company/pacific-meta)[**EduCare** $779K · Mar 2026](https://millionrounds.com/company/educare)[**LINK-US** $3.9M · Mar 2026](https://millionrounds.com/company/link-us)[**Yuimedi** Feb 2026](https://millionrounds.com/company/yuimedi)

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