15,212,221

1013 × 15017

15,212,221 factors as 1013 × 15017. Its 4 positive divisors give a proper-divisor sum of 16,031, so this integer is deficient. The Collatz stopping time is 249 steps.

Prime Factor Structure

Factorization String 1013 × 15017

Distinct Prime Factors 2

Square Status No

Abundance Measure Deficient

Analytical Properties

Total Divisors 4

Divisor Sum (σ) 15,228,252

Proper Divisor Sum 16,031

Digit Sum / Digital Root 16 (Root: 7)

Adjacent Primes #15212213 ← → #15212237

Radix Representation

Decimal	15212221
Binary	111010000001111010111101 (24 bits)
Octal	0o72017275
Hexadecimal	0xE81EBD

Divisor Catalog (4)

1 1,013 15,017 15,212,221

Collatz Trajectory (249 steps to reach 1)

Iterative sequence n → n/2 (if even) or 3n+1 (if odd):

15,212,221 45,636,664 22,818,332 11,409,166 5,704,583 17,113,750 8,556,875 25,670,626 12,835,313 38,505,940 19,252,970 9,626,485 28,879,456 14,439,728 7,219,864 3,609,932 1,804,966 902,483 2,707,450 1,353,725 4,061,176 2,030,588 1,015,294 507,647 1,522,942 761,471 2,284,414 1,142,207 3,426,622 1,713,311 5,139,934 2,569,967 7,709,902 3,854,951 11,564,854 5,782,427 17,347,282 8,673,641 26,020,924 13,010,462 6,505,231 19,515,694 9,757,847 29,273,542 14,636,771 43,910,314 21,955,157 65,865,472 32,932,736 16,466,368 8,233,184 4,116,592 2,058,296 1,029,148 514,574 257,287 771,862 385,931 1,157,794 578,897

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