Calculate with integers that have hundreds or thousands of digits.
Normal calculators lose digits above about 15. This one keeps every digit — multiplying two 30-digit numbers gives a result with 60 digits.
Ordinary calculators and spreadsheets store numbers with about 15–16 significant digits, so large numbers are rounded. This calculator uses exact big-integer arithmetic: add, subtract, multiply, divide (with quotient, remainder and decimals), modulo, powers, GCD and factorials, with inputs up to 5,000 digits.
Results come with a digit count, scientific notation and a copyable full value. See the Exponent Calculator for powers, the Permutation and Combination Calculator for counting and the Prime Factorization Calculator.
The calculator applies the standard method step by step.
| Item | Value |
|---|---|
| Number of digits | 60 |
| Scientific notation | 1.21932631137 × 10^59 |
| Sign | Positive |
| Even or odd | Even |
| Operation | Result |
|---|---|
| 2 ^ 100 | 1,267,650,600,228,229,401,496,703,205,376 |
| 20 factorial | 2,432,902,008,176,640,000 |
| 123456789 × 987654321 | 121,932,631,112,635,269 |
| 10 ÷ 3 | 3 |
| GCD of 12345678901234567890 and 9876543210 | 90 |
A calculator that handles integers far larger than a normal calculator can store, without losing digits.
Inputs up to 5,000 digits. Powers are limited to about 20,000 digits and factorials to 1,500!.
They store numbers in floating point with about 15–16 digits, so anything longer is approximated.
Use the Copy button under the result box — it contains every digit.
A 158-digit number starting 9.33 × 10¹⁵⁷. Enter 100 and choose Factorial to see all of it.
The calculator gives the whole-number quotient, the remainder and the decimal value to 30 places.
It uses the standard method: exact integer arithmetic — every digit is kept; no floating-point rounding The full working and a worked example are shown on this page.
Decimal results use standard double-precision arithmetic (about 15–16 significant digits). Tools that work with whole numbers — big numbers, factors, bases, combinations — use exact integer arithmetic, so no digits are lost.
Yes for checking your work and learning the method. The steps and formula are shown so you can understand the answer, but follow your teacher's rules about calculators in exams.
No. Everything is calculated in your browser and nothing you enter is uploaded or saved.
