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Calculators
13–24 / 73Two-variable linear system
Solve ax + by = c and dx + ey = f using determinants.
Polynomial evaluator
Evaluate polynomial coefficients from highest power to constant with Horner’s method.
Exact factorial
Compute n! exactly as a decimal integer for 0 ≤ n ≤ 1000.
Combinations and permutations
Count unordered selections and ordered arrangements without repetition.
Prime factorization
Factor a positive integer up to one trillion using bounded trial division.
GCD and LCM
Find the greatest common divisor and exact least common multiple of integers.
Modular exponentiation
Compute base^exponent modulo a positive modulus with exact integer arithmetic.
Scientific notation
Express a finite number as a coefficient times a power of ten.
Decimal rounding
Round to decimal places using nearest, floor, ceiling or truncation.
Logarithm calculator
Find log base b of a positive number.
Nth root
Compute a real integer-index root, including odd roots of negative numbers.
Arithmetic sequence
Find the nth term and sum of an arithmetic sequence.
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