555

Nice. Here are quick facts about 555. Tell me the topic you want to focus on and I’ll tailor problems.

• Digits: 5 + 5 + 5 = 15, so divisible by 3 and by 5.
• Factorization: 555 = 3 × 5 × 37.
• Roman numeral: DLV.
• Binary: 555 = 1000101011₂.
• Hexadecimal: 0x22B.
• Base 6: 555 = 2323₆.
• Modulo checks: 555 mod 7 = 2; 555 mod 11 = 5.
• Angle note: 555° is equivalent to 195° (since 555 − 360 = 195).

If you’re studying for an exam, tell me the topic (e.g., factoring, modular arithmetic, base conversions, roman numerals), and I’ll give you a few targeted practice questions.