1960. The most recent prefixes adopted were ronna-, quetta-, ronto-, and quecto- in 2022, after a proposal from British metrologist Richard J. C. Brown...

for <cmath> and <complex> Adding the new 2022 SI prefixes on ratios: std::quecto, std::ronto, std::ronna, and std::quetta std::copyable_function std::submdspan()...

prefix for 1030 is Quetta- (Q), and for 10−30 (i.e., the reciprocal of 1030) quecto (q). These numbers are the largest and smallest number to receive an SI...

10−18 (atto), 10−21 (zepto), 10−24 (yocto), 10−27 (ronto), and 10−30 (quecto). Although formerly in use, the SI disallows combining prefixes; the *microkilogram...

decimal prefixes has been extended to those for 1030 (quetta–) and 10−30 (quecto–). Outline of metrology and measurement Binary prefix, used in computer...

(see Atomic unit of electric dipole moment, NIST.) With a value of 10−30, quecto- is the smallest SI prefix, accepted as an SI prefix by the CGPM on 18 November...

000000000000000000000001 ronto r 10−27 0.000000000000000000000000001 2022 quecto q 10−30 0.000000000000000000000000000001 Notes Prefixes adopted before 1960...

000000000000000000000001 ronto r 10−27 0.000000000000000000000000001 2022 quecto q 10−30 0.000000000000000000000000000001 Notes Prefixes adopted before 1960...

000000000000000000000001 ronto r 10−27 0.000000000000000000000000001 2022 quecto q 10−30 0.000000000000000000000000000001 Notes Prefixes adopted before 1960...

000000000000000000000001 ronto r 10−27 0.000000000000000000000000001 2022 quecto q 10−30 0.000000000000000000000000000001 Notes Prefixes adopted before 1960...