103

Basic Information

Cardinal Number

one hundred and three

Ordinal Number

one hundred and third

Roman Numeral

CIII

Greek Numeral

ΡΓ´

Factorization

103

Standard Form

1.03 × 10²

Different Representations

Binary Form

1100111₂

Ternary Form

10211₃

Quaternary Form

1213₄

Quinary Form

403₅

Senary Form

251₆

Septenary Form

205₇

Octal Form

147₈

Nonary Form

124₉

Undecimal Form

94₁₁

Duodecimal Form

87₁₂

Tridecimal Form

7C₁₃

Quattuordecimal Form

75₁₄

Quindecimal Form

6D₁₅

Hexadecimal Form

67₁₆

Septendecimal Form

61₁₇

Octodecimal Form

5D₁₈

Novemdecimal Form

58₁₉

Vigesimal Form

53₂₀

Unvigesimal Form

4J₂₁

Duovigesimal Form

4F₂₂

Trevigesimal Form

4B₂₃

Quattuorvigesimal Form

47₂₄

Quinvigesimal Form

43₂₅

Hexavigesimal Form

3P₂₆

Septenvigesimal Form

3M₂₇

Octovigesimal Form

3J₂₈

Novemvigesimal Form

3G₂₉

Trigesimal Form

3D₃₀

Untrigesimal Form

3A₃₁

Duotrigesimal Form

37₃₂

Tretrigesimal Form

34₃₃

Quattuortrigesimal Form

31₃₄

Quintrigesimal Form

2X₃₅

Hexatrigesimal Form

2V₃₆

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101	103	107

103 is a 3-digit prime number. 103 has 2 factors, 1 and 103. It is the 27th prime number, and the second prime number from 101-200.

Proofs[]

— 103 is divisible by 1.

— 103 is not divisible by 2-102.

— 103 is divisible by 103.

Therefore, 103 is a prime number.

As an Exponent of Mersenne Number[]

2¹⁰³ - 1 is divisible by 2,550,183,799, and is therefore not a prime number.

Relationship with other odd numbers[]

The numbers before[]

97 is the second previous prime number.
- The difference between 103 and 97 is 6. Therefore, they are sexy primes.
99 is a composite number; its prime factorization is 3² × 11.
101 is the odd number preceding 103, as well as the previous prime number.
- The difference between 103 and 101 is 2. Therefore, they are twin primes.

The numbers after[]

105 is a composite number; its prime factorization is 3 × 5 × 7.
107 is the prime number following 103.
- The difference between 107 and 103 is 4. Therefore, they are cousin primes.
109 is the prime number following 107.
- The difference between 109 and 103 is 6. Therefore, they are sexy primes.
111 is a composite number; its prime factorization is 3 × 37.

In science[]

103 is the atomic number of lawrencium.

Trivia[]

103 is the largest prime factor of $6!+1=721=7\times 103.$
103 is part of a Fermat near miss due to the equation $64^{3}+94^{3}=103^{3}+1.$
103 is conjectured to be the smallest number where repeatedly using the reverse-and-add process will never result in a ternary palindrome; that is, the smallest base 3 Lychrel number.

Navigation[]

Prime Numbers 1-1,000

1-100
1-25	2 • 3 • 5 • 7 • 11 • 13 • 17 • 19 • 23
26-50	29 • 31 • 37 • 41 • 43 • 47
51-75	53 • 59 • 61 • 67 • 71 • 73
76-100	79 • 83 • 89 • 97

101-200
101-125	101 • 103 • 107 • 109 • 113
126-150	127 • 131 • 137 • 139 • 149
151-175	151 • 157 • 163 • 167 • 173
176-200	179 • 181 • 191 • 193 • 197 • 199

201-400
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250-300	251 • 257 • 263 • 269 • 271 • 277 • 281 • 283 • 293
301-350	307 • 311 • 313 • 317 • 331 • 337 • 347 • 349
351-400	353 • 359 • 367 • 373 • 379 • 383 • 389 • 397

401-600
401-450	401 • 409 • 419 • 421 • 431 • 433 • 439 • 443 • 449
450-500	457 • 461 • 463 • 467 • 479 • 487 • 491 • 499
501-550	503 • 509 • 521 • 523 • 541 • 547
551-600	557 • 563 • 569 • 571 • 577 • 587 • 593 • 599

601-800
601-650	601 • 607 • 613 • 617 • 619 • 631 • 641 • 643 • 647
651-700	653 • 659 • 661 • 673 • 677 • 683 • 691
701-750	701 • 709 • 719 • 727 • 733 • 739 • 743
751-800	751 • 757 • 761 • 769 • 773 • 787 • 797

801-1,000
801-850	809 • 811 • 821 • 823 • 827 • 829 • 839
851-900	853 • 857 • 859 • 863 • 877 • 881 • 883 • 887
901-950	907 • 911 • 919 • 929 • 937 • 941 • 947
951-1000	953 • 967 • 971 • 977 • 983 • 991 • 997