www.mikescher.com/www/statics/euler/Euler_Problem-070.php

<?php

return 
[
	'number'      => 70,
	'date'        => '2015-08-18',
	'title'       => 'Totient permutation',
	'abbreviated' => false,
	'steps'       => 29380799,
	'time'        => 3713,
	'width'       => 150,
	'height'      => 47,
	'value'       => 8319823,
];